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Why Evolution is True is a blog written by Jerry Coyne, centered on evolution and biology but also dealing with diverse topics like politics, culture, and cats.
Updated: 2 hours 27 min ago

An evolutionary biologist lists and discusses the ten most influential books in the field

Tue, 04/07/2026 - 9:00am

I would have missed this video had reader Doug not called my attention to it. It’s a very good half-hour discussion by evolutionary biologist Zach B. Hancock, a professor at Augusta University, in which he recommends the the top ten most influential books in evolutionary biology. Since Hancock is a population geneticist, the books deal largely with evolutionary genetics, but not all of them.

I slipped in at #10 with my book on Speciation with Allen Orr, but I won’t be too humble to claim our book wasn’t influential, for, as Hancock notes, it’s the only comprehensive book on the origin of species around. (Darwin’s big 1859 book was about the origin of adaptations, and had little that was useful about the origin of species.) Hancock regrets that Allen and I aren’t going to do a second edition, but Allen refuses to, and I don’t have the spoons (I do have 200 pages of notes on relevant papers that appeared after our book came out, but that will go nowhere.)

The rest of the list is stellar, and shows a keen judgement about the field. I’m not sure I would have put Lack’s book on the Galápagos finches in there, as it’s pretty much out of date. It should be replaced by a very important book by Ernst Mayr, his Systematics and the Origin of Species or the updated version in 1963,  Animal Species and Evolution. It was Mayr who codified the Biological Species Concept and paved the way for experimental and observational studies of speciation, and hence my book with Orr. 

I’d expect every graduate student in evolutionary genetics to have read  most of these books by the time they get their Ph.D. In fact, when I was on prelim hearings, judging whether students could be admitted to candidacy after a year or two, I and my colleague Doug Schemske made a habit of asking students to name the major accomplishments of several of the authors listed below. My impression is that the history of the field is not given so much weight now, so I wonder if students could still explain the major accomplishments of say, Theodosius Dobzhansky or Ronald Fisher. The books are of more than historical interest, for they raise questions that are still relevant. (I spent a lot of my career trying to understand the phenomenon of “Haldane’s Rule,” explained by J.B.S. Haldane in 1922. The paper was completely neglected until I read it in the early eighties and started a cottage industry of explanations [my own was largely wrong]).

Hancock’s explication of each book is excellent.  If you’re an academic teaching evolutionary biology, you might see how many of these books your students have read.

One commenter on YouTube gave the list and the time points in the video where each is discussed (the links go to those time point).

2:26 #10 Speciation – Jerry Coyne & Allen Orr
4:50 #9 Darwin’s Finches – David Lack
6:59#8 Evolution: The Modern Synthesis – Julian Huxley
9:15 #7 The Origins Of Genome Architecture – Michael Lynch
11:23 #6 Chance & Necessity – Jacques Monod
13:26 #5 The Selfish Gene – Richard Dawkins
16:54 #4 The Neutral Theory of Molecular Evolution – Motoo Kimura
19:34 #3 Genetics and the Origin of Species – Theodosius Dobzhansky
22:20 #2 The Genetical Theory Of Natural Selection – Ronald Fisher
26:35 #1 On The Origin Of Species – Charles Darwin

Categories: Science

Two “Times” obituaries for Robert Trivers

Tue, 04/07/2026 - 7:45am

Reader Simon called my attention to a new obituary in the Times of London of Robert Trivers, a giant in evolutionary biology (and a notorious eccentric) who died on March 12.  Because his death wasn’t announced immediately after he expired, this was bit late, but better late than never—especially given Trivers’s importance in the field. It’s a good obituary but the gold standard was Steve Pinker’s “in memoriam” article about Trivers published in Quillette on March 25.

Click the screenshot below to read, and if that doesn’t work,the article is archived here.

An excerpt:

In a burst of creativity in the early 1970s, Robert Trivers published a series of scientific papers that earned him a claim to being among the most important evolutionary theorists since Darwin. He was the first to fully appreciate how a gene-centric view of natural selection could explain some of the most puzzling and fundamental patterns in social life: the function of altruism, why males and females differ so much, the underpinnings of sibling rivalry and the delicate dynamic of conflict and co-operation that exists between parent and child.

Brilliantly original, Trivers was also an academic misfit: a foul-mouthed, pot-smoking individualist with a notable tendency to get into violent scrapes and an ungovernable character that eventually strained his relationship with the academy to breaking point.

Why do we ever behave altruistically? That is, why would an organism ever promote the reproductive success of another at some cost to its own? Since the work of the great evolutionist WD Hamilton, it had been appreciated that “kin selection” could explain why close relatives help one another out: doing so promotes an organism’s “inclusive fitness”, a measure accounting not only for an organism’s own genes but for copies of the same genes likely to be present in relatives. But why help non-kin? To Trivers, it was an obvious fact of life that we sometimes give priority to friends, and even strangers, over direct relatives.

Persuaded of the misguidedness of “group selectionist” theories that were fashionable at the time — according to which organisms sometimes sacrifice themselves for the “good of the species” — Trivers gave the central explanatory role to the gene. In his landmark 1971 paper, The Evolution of Reciprocal Altruism, Trivers argued that altruism depended on the possibility of reciprocity. As long as helping a non-relative is not too costly, and there is sufficient probability that the favour would one day be returned, genes coding for altruistic dispositions spread.

. . . Frustrated by the Harvard biology faculty’s delay in granting his tenure application in the late 1970s, he abruptly left with his young family to take up a position at the University of California, Santa Cruz, a decision he came to regard as a “once in a lifetime” mistake. There, he befriended Huey Newton, co-founder of the paramilitary Black Panther political party, who was a doctoral student at the university. They co-authored a paper on self-deception, and Trivers made Newton his daughter’s godfather. He joined the Panthers for a period and later confessed to doing “an illegal thing or two”, before Newton removed him from the group for his own safety.

In fact, what I recall in 1977 is that Harvard’s biology department recommended tenure for Trivers, but that recommendation was overturned by President Derek Bok.  I was there at the time and can vouch for that. Others say that Trivers asked for early tenure and was denied that, and then decided to leave Harvard. I also heard, and I can’t vouch for this, that Richard Lewontin (my Ph.D. advisor) and Dick Levins, both Marxists who despised sociobiology, went to President Bok to lobby him to deny Trivers tenure.  What we do know is that Trivers then moved to Santa Cruz, and later to Rutgers, where his academic turmoil continued:

. . . In 2015 he was suspended by Rutgers University for refusing to teach a course on human aggression, a field he claimed he was not expert in (despite its being a personal forte of his). He quit university life for good shortly after. Later, he was among the set of high-profile intellectuals pilloried for maintaining financial and social links to Jeffrey Epstein, even after the latter’s conviction for sex offences. Far from apologetic, Trivers, who accepted funding from Epstein to study the relationship between knee symmetry and sprinting ability, vouched for his integrity; in Trivers’s view, Epstein’s imprisonment was punishment enough and his crimes less “heinous” than they were made out to be.

It is testament to the depth and generality of Trivers’s discoveries that they could be applied so readily, as he unsparingly conceded, to his own case. As he understood, natural selection has built us, and it is to natural selection we must return “to understand the many roots of our suffering”.

Compared to Pinker’s piece, the Times obituary is light on Trivers’s scientific accomplishments, but all in all it’s pretty good.

Below is a NYT obituary, also delayed, that appeared on March 27 (click to read or find it archived here):

An excerpt (David Haig, who’s quoted, has written his own remembrance of Trivers, as the two were good friends; but I don’t think it’s yet been published):

“Robert Trivers was unlike any other academic I have known,” David A. Haig, an evolutionary biologist at Harvard, wrote in a remembrance of Professor Trivers for the journal Evolution and Human Behavior. “In another life, he might have been a hoodlum.”

Raised by a diplomat and a poet, and educated at Phillips Academy in Andover, Mass., and Harvard University, Professor Trivers thrived on challenging scientific orthodoxies, calling the field of psychology a “set of competing guesses.” (He also scorned physics, noting that its utility was “connected primarily to warfare.”)

In the early 1970s, as a graduate student at Harvard and later as an untenured professor there, he published a series of papers applying Darwin’s theory of natural selection to social behavior, arguing that science had failed to connect evolution to an understanding of everyday life.

“I was an intellectual opportunist,” he wrote in “Natural Selection and Social Theory: Selected Papers of Robert Trivers” (2002). “The inability of biologists to think clearly on matters of social behavior and evolution for over a hundred years had left a series of important problems untackled.”

The paper does a decent job in outlining Trivers’s contributions, the most important of which was his evolutionary explanation of “reciprocal altruism”, but again, see Pinker for a fuller explication.  A bit more about the situation at Harvard:

During this creative burst, Professor Trivers struggled with mental health issues and was hospitalized at least once for bipolar disorder. He applied for early tenure at Harvard, but the decision was postponed because of concerns about his mental health.

“He could be a brilliant and wonderful colleague,” Professor Haig said. “In a different mood, he could be unnecessarily hostile to those around him.”

That’s enough for now, save one I just found in Skeptic, a remembrance by Trivers’s only graduate student ever, Robert Lynch. Click below to read:

It ends this way:

One of the last times I spoke with Robert, a fall had left his right arm nearly useless. He described it as “two sausages connected by an elbow.” He was a chaotic and deeply imperfect man, but also one of the few people whose ideas permanently changed how we understand evolution, animal behavior, and ourselves. Steven Pinker wrote that “it would not be too much of an exaggeration to say that [Trivers] provided a scientific explanation for the human condition: the intricately complicated and endlessly fascinating relationships that bind us to one another.”  That seems just about right to me.

His ideas are some of the deepest insights we have into human nature, animal behavior, and our place in the web of life. The mark of a great person is someone who never reminds us of anyone else. I have never known anyone like him.

I’ll miss you, Robert. You asshole.

Categories: Science

More touting of indigenous knowledge as coequal with modern science

Mon, 04/06/2026 - 9:00am

Once again we have an article about how science could be improved if only it incorporated indigenous “ways of knowing”—the “braiding of knowledge” referred to in the Guardian article below (click to read).  I often see another metaphor used to express the same thing: “two-eyed seeing”, with one eye seeing the way indigenous people do, and the other way modern science does. (I won’t use the term “Western science,” often used to denigrate it.) The implication is that modern science is half blind without indigenous knowledge.

And once again we see five things. The first is that indigenous knowledge is local knowledge, usually about how to grow food or harvest other things that enhance the lives of locals.

Second, indigenous “ways of knowing” are not science in the modern sense—the sense that involves hypothesis testing, doubt, controlled experiments, blind testing statistics, data analysis, and mathematics.  Indigenous “science” does not avail itself of these essential items in the toolkit of science.  Rather, it usually involves using trial and error (mainly about food), and if something works, it becomes “knowledge”. Such knowledge—like how to build the “clam gardens” copiously mentioned in the article below—may be true and may indeed be “knowledge” conceived of as “justified true belief”, but justification usually doesn’t involve replication.

Third, the “braiding” is asymmetrical: modern science can contribute much more to indigeous practices than the other way around. How to build clam gardens or harvest sweetgrass is, after all, not something that’s widely applicable, while principles of genetics, quantum mechanics, chemistry, and so on, are universal, and science can do a lot to help indigenous people with issues like medicine, probably the most important area of asymmetry.  We do not often adopt indigenous medical practices, but the other way around is pervasive, because modern medicine, based largely on science, works..

Fourth, examples of indigenous knowledge that are given in the article are few. These article are usually a lot more about people touting “other ways of knowing”, and calling attention to the past oppression of indigenous people, than they are about the expansion of human knowledge.

Finally, the article completely neglects examples of the damage done to the environment by indigeous people, and these examples are not rare. They cannot be mentioned because what indigenous people do must be uniformly regarded as good. But they are not, as the date below the fold show.

Click below to read; the author is Leila Nargi.

Examples of indigenous knowledge. I would be remiss if I neglected the “ways of knowing” that the article says should be braided with modern science. There are not many, but this list is pretty exhaustive from the article. Excerpts from it are indented, and my comments are flush left.

Clam gardens:

Beginning at least 4,000 years ago, Native communities built clam gardens into the intertidal zone from Washington state through coastal British Columbia, and into south-east Alaska. They are a unique form of mariculture that provide harvestable habitat for an array of tasty ocean creatures like butter clams – collected “in great numbers, then smoked and dried and stored and traded”, Hatch said. But they also yielded red rock crab, basket cockles, sea cucumbers, limpets, sea snails and seaweeds in a veritable smorgasbord for humans and marine mammals, such as otters.

These gardens change where sediment moves and may protect against increasing shoreline erosion; studies also show that clam productivity and populations are higher inside gardens than outside them.

Yes, this is an advance in growing clams, and may have other salubrious environmental effects, though they aren’t documented. At any rate, stemming erosion would be limited because clam gardens are restricted in size.

Sweetgrass harvesting:

Still, the necessity of “proving” the validity of longstanding Indigenous practices can frustrate. Suzanne Greenlaw, a citizen of the Houlton Band of Maliseet Indians, is an ecologist at the Schoodic Institute, a non-profit of the National Park Service (NPS) that supports Wabanaki-led research. She participated in a 2016 study to understand how sweet grass, which grows in salt marshes, rebounds after harvesting. The study was part of a Wabanaki bid to re-establish the right to gather sweet grass from NPS land. Though the Wabanaki have made baskets from sweet grass for centuries, they have been cut off from ancestral marshes in Maine’s Acadia national park for at least 100 years.

Non-Indigenous researchers planned to conduct an environmental assessment to gauge how well plants regrew after picking, choosing sweet grass plots that had no connection to those once used by the community. This led to a comparison study in which Wabanaki practitioners demonstrated their superior understanding of how and where to harvest for the greatest ecological benefit. (They may reclaim harvest rights later this year.)

Notice that modern science will be used to verify whether the way sweetgrass is harvested affects future harvests.  But that is not indigenous knowledge; rather, it’s an in-progress attempt to verify that knowledge, with the goal of helping indigenous people who have lost their right to harvest regain their rights.

Other stuff:

More Indigenous people – Robin Wall Kimmerer, author of Braiding Sweetgrass, is a notable example – are entering academia and changing it from the inside, while some tribal nations have hired their own scientists. Non-Native institutions are seeking to undo their erasure of Indigenous cultures; the Brooklyn Botanic Garden has started to include labeling that highlights Lenape names and uses for food plants like persimmons. International environmental organizations also increasingly recognize the importance of including Indigenous voices in discussions around the climate crisis. Since 2022, there’s even been federal funding to study ways to combine Indigenous and western sciences, so each part remains distinct while being strengthened by the other.

Note that labeling plants with indigenous names is an exercise in linguistics and anthropology, not a “way of knowing”. And while indigenous people should not be excluded from discussions about practices that may affect their lives, that too is not “knowledge’ but inclusion.

More:

In fact, there are many proven correlations between Indigenous-managed food systems and ecological health. Researchers at Simon Fraser University have found that when Indigenous groups in British Columbia tended forest gardens, they not only produced an impressive biodiversity of food plants – from crabapple and hazelnut and wild plum to wild rice and cranberries – they also improved forest health.

Whyte, the University of Michigan professor, works with the Sault Ste Marie Tribe of Chippewa Indians in Michigan – one of many Native nations that used prescribed burns to boost populations of sharp-tailed grousesnowshoe hare and deer, all of which declined after the federal government’s 1911 burning ban. Collaborating with US Forest Service researchers, they conducted more than 20 ecology surveys and other projects that proved their case for fire, in the interest of establishing a co-management plan that would allow them to reintroduce this tool.

The first part is absolutely expected: if you deliberately plant diverse plants to get fruits and nuts, and compare the biodiversity with that of native forests, yes, you’ll get a more diverse “ecosystem”. If you see that as a “healihier” ecosystem because it has more ethnobotanical assets, yes, that is also true.  But surely the author doesn’t mean to imply that all North American forest should be turned into “forest gardens” for growing food.

As for controlled burning, yes, that can be useful in replacing natural burns that are no longer permitted, but in the past burns set by indigenous people could become uncontrolled.  This was particularly dire in New Zealand, where 40% of native forest (30-35% of the total land area) was burned by Māori people within 200 years of their arrival on the two main islands in the 13th century. (There were of course no non-Polynesian “colonists” then.) See below the fold for more data.

All in all, it’s not an impressive record, and hardly one that enriches modern science. Indeed, modern science is making a large contribution to indigenous people than the other way around. Despite that,

Indigenous knowledge is sacralized and, the article implies, should be considered coequal with modern science.  Some quotes:

Rather than dismissing Indigenous knowledge, more western scientists are discovering its viability for themselves and adjusting their research goals to embrace it.

That represents a “massive shift”, according to Kyle Whyte, a professor of environmental justice at the University of Michigan and a member of the Citizen Potawatomi Nation. Historically, western scientists have considered themselves rigorous and empirical, while they have classified traditional Native thought as mythic, religious or plain made-up, he said.

It’s not false to say that a great deal of “traditional Native thought”, construed as “ways of knowing”, is indeed mythic, religious, or plain made-up.  But some of it is not, and insofar as this knowledge can be verified by modern science, that part is indeed “knowledge”.

Western science favors distinct disciplines – ecology, biology, geology and Supernant’s specialty, archaeology. But Indigenous knowledge considers “the earth and the water and the air and the plants and the animals as deeply interdependent and interconnected; to understand one is to understand all. And that has a lot to teach western science,” Supernant said of the importance of braiding these systems.

Notice the inaccurate term “Western science”.  And insofar as a system is dependent on other things, modern science has to deal with it. But, as my advisor Dick Lewontin said in an essay called “A reasonable skepticism“:

But this holistic world view is untenable. It is simply another form of mysticism and does not make it possible to manipulate the world for our own benefit. An obscurantist holism has been tried and it has failed. The world is not one huge organism that regulates itself to some good end as the believers in the Gaia hypothesis believe. While in some theoretical sense “the trembling of a flower is felt on the farthest star,” in practice my gardening has no effect on the orbit of Neptune because the force of gravitation is extremely weak and falls off very rapidly with distance. So there is clearly truth in the belief that the world can be broken up into independent parts. But that is not a universal direction for the study of all nature. A lot of nature, as we shall see, cannot be broken up into independent parts to be studied in isolation, and it is pure ideology to suppose that it can.

It is common to say that indigenous knowledge is superior to modern science because the former is more “holistic”.  Lewontin shows the fallacy of that claim.

Here’s another common claim you encounter in this kind of literature:

As opportunities for western and Indigenous collaborations multiply, it’s critical that Indigenous people maintain control over any knowledge gleaned and how it’s used, especially in light of western scientists’ historic penchant for extracting information that suited their own purposes and dismissing the rest. “Western science can help, as long as Native people are still decision makers. . . ” [quote from Suzanne Greenlaw, a Native American ecologist]

If this means anything beyond the way that published data is treated in modern science, then it is an unwarranted privilege. When science is published it becomes the property of humanity, and by and large those who produced the knowledge have no control about how it’s used—nor should they. If other people want to use what you’ve published for their own purposes, well, that’s the way science works. Indigenous people should have no more control over any knowledge they make public than should anybody else.

Below we see the implication that indigenous knowledge should be considered coequal with modern science (the quote is from Kisha Supernant “Métis and Papaschase and the director of the University of Alberta’s Institute of Prairie and Indigenous Archaeology”):

What constitutes progress when it comes to braiding western and Indigenous science depends on whom you ask. “If the burden of proof remains on Indigenous communities to demonstrate, using western scientific methods, that their knowledge … is valid, I think we’re not at the place we need to be,” Supernant said. “It is difficult to braid two things together when they’re not given equal weight in the braid.”

Well, I’d say that given the toolkit that’s constitutes modern science and is used to establish “knowledge,” then yes, indigenous people should have to demonstrate that their knowledge really is knowledge in the modern sense before it’s used.  When the Māori want to play whale songs to infected kauri trees because whales and kauri trees were once seen as brothers, then they should have to demonstrate the phylogenetic affinity of trees and cetaceans as well as the efficacy of whale songs. (This is a real case based on mytic lore.)

Finally, the bit below strikes me as rather patronizing, treating Indigenous people like children. (“Whyte” is a “professor of environmental justice at the University of Michigan and a member of the Citizen Potawatomi Nation.”)

Whyte is encouraged that the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES), which seeks to provide scientific evidence to inform government decision-making, included a chapter on Indigenous knowledge in its latest global assessment. But he sees plenty of opportunity for improvements to braiding. For starters, “Indigenous people need to be involved at the earliest stages of research,” he said. And that means western scientists “need to get into the habit of approaching potential [Indigenous] partners and saying ‘I’m interested in water. Are you interested in water?’ before any research questions have been created. Let’s just get excited together about the topic, and plan from the beginning.”

If they plan experiments on indigenous land, or experiments that affect indigenous people, then yes, there should be consultation.  But “getting excited together” before any research questions have been formulated is not the way that science works, nor should it.  Science is not an endeavor that involves research equity, and creating such equity must be an extracurricular activity. The job of science is to understand the Universe, not to create social justice or spread an ideology.

h/t Ron, Ginger K

Click “continue reading” to see what we know about the damage indigenous North Americans did to the environment. It gives the answer to a question I asked Grok.

The question I asked: What damage did indigenous North American people do to the environment? And Grok’s complete answer, with sources (the ones I got had links).

Indigenous North American peoples (pre-Columbian ancestors and later Native American groups) altered their environments in significant ways, as all human societies do when they hunt, farm, burn landscapes, or build settlements. This often caused localized environmental damage, including species declines or extinctions, soil degradation, erosion, and major shifts in vegetation. The notion of a “pristine wilderness” untouched by humans before Europeans is a myth; archaeological, paleoecological, and historical evidence shows active modification and overexploitation in many regions.

Impacts varied by group, region, time, and technology (e.g., hunter-gatherers vs. agricultural societies), and were generally smaller-scale and more reversible than industrial-era damage due to lower populations and simpler tools. Many practices were adaptive for the peoples involved (e.g., increasing game or crops), but they still produced clear negative effects on ecosystems, biodiversity, and long-term habitability in specific areas. Here are the main documented examples:

1. Contribution to Pleistocene Megafauna Extinctions (~13,000–11,000 years ago)The arrival of humans in North America coincided with the extinction of ~38 genera of large mammals (megafauna), including mammoths, mastodons, giant ground sloths, camels, horses, and saber-toothed cats. The “overkill hypothesis” (proposed by Paul Martin) argues that efficient human hunters rapidly drove these naïve animals to extinction through direct predation, especially as human populations grew and spread.

  • Supporting evidence includes kill sites with Clovis points and megafauna bones, plus computer models showing hunting pressure could cause rapid collapse. Humans hunted/scavenged these species continent-wide, including in eastern North America. sapiens.org
  • Counterarguments note climate change (end of the Ice Age) played a major role, with many species already declining; extinctions weren’t instantaneous “blitzkrieg.” Some studies suggest 75–90% of northeastern megafauna vanished before or without heavy human involvement. science.org

Consensus: Humans were a key driver (especially in the Americas, where losses were ~72% of large mammal genera), amplifying climate stress via overhunting and habitat disruption. This was the earliest major human-caused environmental shift on the continent.

ourworldindata.org

2. Agricultural Overexploitation and Landscape Degradation (Southwest and Other Farming Regions)Sedentary farming societies like the Ancestral Puebloans (Anasazi/Hohokam, ~AD 1–1500) in the arid Southwest cleared woodlands, built irrigation systems, and intensified agriculture, leading to deforestation, soil erosion, salinization, and arroyo (gully) formation. These contributed to regional collapses and site abandonments.

  • Chaco Canyon (Ancestral Puebloans): Massive wood harvesting for construction and fuel stripped local woodlands (piñon-juniper, ponderosa pine). This caused destabilization, soil erosion, reduced water retention, and increased environmental unpredictability during droughts. pmc.ncbi.nlm.nih.gov
  • Hohokam (Arizona’s Salt and Gila River valleys): Long-term irrigation raised groundwater salinity, rendering fields infertile and contributing to agricultural failure and societal decline by the 15th century. acsess.onlinelibrary.wiley.com
  • Similar issues elsewhere: Prehistoric farming caused accelerated soil erosion in some areas, outpacing natural rates. sciencedirect.com

These were human-induced changes that made recovery difficult without relocation—classic cases of local environmental collapse from overexploitation.

3. Widespread Controlled Burning and Vegetation Shifts

Indigenous groups across North America (and especially the Great Plains, California, and eastern woodlands) used frequent, low-intensity fires to manage landscapes: clear underbrush for travel/hunting, promote grasses and fire-tolerant plants (oaks, hickories), drive game, and enhance berry/root crops. This profoundly altered ecosystems from what they would have been under purely natural (lightning) regimes.

  • Forests were converted to grasslands, savannas, or open woodlands with grassy openings. Fire-tolerant species increased near settlements (e.g., oaks rose dramatically in southern New England forests). psu.edu
  • This created the “park-like” landscapes Europeans later described—not untouched wilderness. Post-contact fire suppression (after indigenous populations crashed) led to fuel buildup and today’s severe wildfires. en.wikipedia.org

While often sustainable and biodiversity-enhancing in a mosaic sense, it represented deliberate, large-scale human modification that reduced closed-canopy forests and favored human-preferred species over others.

4. Hunting and Local Overexploitation

Beyond megafauna, there is evidence of wasteful or unsustainable hunting:

  • Buffalo jumps and communal hunts sometimes killed far more animals than needed (pre- and post-horse), leaving carcasses unused. thetedkarchive.com
  • In some areas, deer, beaver, and other game were depleted locally through intensive harvesting (pre-contact for subsistence; later amplified by European trade).
  • Shepard Krech’s The Ecological Indian (1999) documents cases where indigenous groups did not always act as perfect conservationists—e.g., selective use of animals or failure to limit impacts despite knowledge of ecology. thetedkarchive.com

Pre-contact populations peaked around AD 1150 before some regional declines (from drought, warfare, disease), showing societies weren’t always in perfect equilibrium.

dri.edu

Context and ScaleThese impacts were real but not uniform or continent-wide “destruction.” Many groups were mobile or low-density, allowing recovery over time. Practices often reflected deep ecological knowledge (e.g., fire as “medicine” for resilience). European contact later caused massive indirect changes via depopulation (~90% decline in some areas from disease), followed by reforestation—but the question focuses on indigenous actions.

theguardian.com

Scholarly views (e.g., Krech, paleoecological studies) reject romanticized “harmony with nature” as ahistorical. Indigenous peoples were sophisticated actors who shaped, exploited, and sometimes damaged environments for survival and advantage—just as humans everywhere have. Modern conservation draws useful lessons from their fire management, but facts show they were not uniquely non-impactful.

Categories: Science

Lunary flyby day: Live coverage

Mon, 04/06/2026 - 7:00am

Today the Artemis 2 capsule with its four astronauts does its transit around the Moon, going further into space than any human have gone into space. They’ll also see parts of the Moon’s backside that have never been seen by the living human eye, though the backside has been amply photographed.

Shortly after midnight this morning, the capsule entered the Moon’s “sphere of influence,” meaning the part of space where the gravity of the Moon exceeds the gravity of Earth.  The schedule is below, and I’ve put a video of the live proceedings below.

From the Space.com site:

The Artemis 2 astronauts have arrived in the moon’s sphere of influence, and are now preparing for a very full day of lunar observations.

They crossed the celestial threshold early Monday morning (April 6), becoming the first people to do so since the crew of Apollo 17, in 1972.

The pull of the moon’s gravity on the Artemis 2 Orion capsule officially became stronger than Earth’s influence on the spcecraft at 12:37 a.m. EDT (0437 GMT), as Orion flew 39,000 miles (62,764 kilometers) above the moon and 232,000 miles (373,368 km) from Earth.

Today, they will break the distance record set by Apollo 13, which flew 248,655 miles (400,171 kilometers) from Earth. Artemis 2 reach that, and then some, but between breaking the record and setting their own, they will have hours of lunar observations to conduct as Orion makes its closest approach to the moon.

Here’s a full breakdown of what to expect today (all times in EDT):

There will be about a 40-minute communications blackout (starting at about 6:47 pm) when they go around the Moon. Here’s today’s schedule:

1 p.m.: NASA lunar flyby coverage begins.
1:56 p.m.: Apollo 13 distance record broken
2:10 p.m.: Crew remarks about record
2:15 p.m.: Crew configures Orion for flyby
2:45 p.m.: Lunar observation period begins
6:47 p.m.: Loss of communications (estimated 40-min.)
7:02 p.m.: Closest approach to the moon
7:05 p.m.: Maximum distance from Earth
8:35 p.m.: Orion enters solar eclipse period
9:20 p.m.: Lunar observation period ends
9:32 p.m.: Solar eclipse period concludes

Watching a bit this morning, I see there is a possible cabin leak, which is worrying, but it may have been a false alarm.

If the video is not working, you can see it on the Space.com site: You can also scroll back and see what was going on previously.

h/t: Bat

Categories: Science

Readers’ wildlife photos

Mon, 04/06/2026 - 6:15am

Today’s photo come from reader Jan Malik, who took them in New Jersay. Jan’s captions are indented, and you can enlarge the photos by clicking on them.

As an appendix to the earlier Tree Swallow pictures, here are a few more from the New Jersey Botanical Garden. A walk in that park on the first day of spring is a ritual of mine—to ensure all observable phenomena related to spring are happening again and that the thermal death of the Universe is postponed for yet another year.

Red-bellied Woodpecker (Melanerpes carolinus) pausing mid-search for food. This is a female; in this species, the red plumage is restricted to the nape and the area above the bill, whereas males sport a continuous red cap:

Spring Snowflake (Leucojum vernum, possibly var. carpathicum), a Eurasian transplant. It looks succulent, but this perennial defends itself against mammalian browsing by producing bitter, poisonous alkaloids:

Eastern Cottontail (Sylvilagus floridanus) hiding in bearberry brambles. Against this notorious garden destroyer, only the Holy Hand Grenade of Antioch offers a true degree of protection:

Forsythia (Genus Forsythia) in bloom—the unmistakable sign that spring has arrived:

White-breasted Nuthatch (Sitta carolinensis). Like the woodpecker, it is a connoisseur of arthropods hiding in bark. however, by being equally adept at feeding head-down or head-up, it finds insects that a woodpecker might miss:

Common Water Strider (likely Aquarius remigis) emerged from its winter hiding. These are predators and scavengers of insects trapped on the surface of slow-flowing streams. As a “true bug,” it has evolved to exploit surface tension. However, surface tension alone doesn’t keep it dry; the secret lies in the dense, hydrophobic hairs on its tarsi. These trap air to act as tiny “dinghies,” preventing the legs from being wetted by capillary action:

Crocus flower (likely a Woodland Crocus, Crocus tommasinianus). The flowers emerge before the leaves, which then die back in late spring after accumulating enough biomass for the year. This adaptation to montane meadows and early forests allows them to bloom early, while withdrawing underground provides a defense against browsing:

Northern Mockingbird (Mimus polyglottos) picking bittersweet fruit (likely the introduced Oriental Bittersweet, Celastrus orbiculatus). The fruit is indeed slightly sweet—a fact I confirmed before spitting it out, as they are reportedly toxic to humans. As they say: don’t try this at home; try it in nature instead:

After the meal, the mockingbird sits quietly in a nearby bush. They mimic other birds’ calls, possibly to fool rivals into thinking a territory is already occupied. It doesn’t work on me, though—I can always tell the original bird from the imitation:

Snowdrop (Genus Galanthus), another Eurasian immigrant. Most of the plants in these pictures were introduced from Eurasia to the Americas; however, with the exception of the Bittersweet, they are generally not considered invasive:

A Jumping Spider. I can’t vouch for the exact ID, but it resembles Phidippus princeps. While not my best shot, it’s worth noting that, like all others in this series, it was taken with a single lens (Canon RF 100-500mm)—a blessing for a lazy photographer.

An Eastern Gray Squirrel (Sciurus carolinensis), looking lean after winter and digging for roots and grubs in the lawn. This species is an unwelcome sight in Europe, where its introduction is displacing the native Red Squirrel. But can we really blame them? They are simply good at being squirrels. It is entirely a human fault that geographical barriers are collapsing. In this “Homogecene” era of a connected world, the total number of species will inevitably decline:

Categories: Science

Easter homily: Baron David Frost touts God in the Telegraph

Sun, 04/05/2026 - 8:15am

I guess the Torygraph is considered “mainstream media” in the UK, and, like American MSM, seems to be touting religion in a way we didn’t see a few years ago. In this short article, which I found through the disparaging tweet below (an accurate, tweet, it seems), Baron David Frost, a conservative political bigwig in the UK, tells us why we should be going to church this Easter.  He seems to love “full-fat supernatural Christianity,” which apparently means the whole Catholic hog, from snout to tail. No “skim Christianity” for him!

Go below to read the article.

Hello, I am mental.

Richard Smyth (@rsmythfreelance.bsky.social) 2026-04-03T07:46:00.501Z

Click the screenshot below to go to an archived version of the Torygraph piece, which describes Lord Frost (is that the same thing as a Baron?) this way:

Lord Frost led the negotiations that finally took Britain out of the EU in 2020.  A Cabinet minister in the Boris Johnson government, he resigned in protest at the handling of Covid lockdowns, and has since been a persistent advocate of a more fully conservative approach to policy on the Right. He is a non-affiliated peer in the House of Lords.

Wikipedia adds this:

David George Hamilton Frost, Baron Frost (born 21 February 1965) is a British diplomat, civil servant and politician who served as a Minister of State at the Cabinet Office between March and December 2021. Frost was Chief Negotiator of Task Force Europe from January 2020 until his resignation in December 2021.

Frost spent his early professional career in the Foreign and Commonwealth Office (FCO), becoming Ambassador to Denmark, EU Director at the FCO, and Director for Europe and International Trade at the Department for Business, Innovation and Skills. He was a special adviser to Boris Johnson when the latter was Foreign Secretary in Theresa May’s government.

And yes, I have to say, although it’s Easter, the guy is mental, for he thinks that anybody who has had an elevating aesthetic or emotional experience is providing evidence not just for God, but for the God of Rome.

I’ll put a few topics under bold headings (mine). The indented parts are from the article by Baron Frost.

The evidence for a revival of Christianity is weak. First, Frost makes this admission:

The Quiet Revival – the view that people are coming back to church and the long years of decline might be over – has been much discussed in ecclesiastical circles this last year. A YouGov poll in a Bible Society report seemed to vindicate it by asserting the number of 18 to 24-year-olds attending church monthly had jumped from 4 per cent in 2018 to 16 per cent in 2024.

It’s fair to say that these figures were a bit controversial right from the start. And the doubts were justified last week, when YouGov, in its latest polling flop, had to admit it had made an error and had not applied proper quality control to its sample.

So are we back to square one? Is the whole thing just confirmation bias and wishful thinking?

So he gives the “evidence” for the revival, which he has to find in places other than the polls. One is in hearsay, another his own behavior:

I don’t think so. Something is definitely happening, if not exactly what the Bible Society described. There is too much other evidence. Numbers coming into the Catholic Church each Easter, here and across the West, are increasing (I was one in 2025). Footballers are open about their faith in a way that didn’t happen a decade back. Sales of printed Bibles have doubled. There is even a mini boom in the Greek Orthodox Church going on.

Summing it up, the Rev Daniel French, chaplain at Greenwich University and Irreverend podcaster, said: “I see considerable curiosity about faith, particularly from young adults, often men. The old assumptions that religious conversations are taboo have evaporated. My week is filled with impromptu chats about God in a way it wasn’t ten years ago.”

Why is the West becoming more Christian? It isn’t, but this is what the sweating Baron says: it’s the Internet and the stagnation of society, Jake!

Why might this be? It’s speculative, but my experience suggests several different reasons. One is the simple availability of different Christian voices on the internet. If your only exposure to Christianity is in your school religious studies class with a dull and inexpert teacher, as it might have been in the past, it could turn you off for good. But if you can hear Glen Scrivener or Bishop Robert Barron online, you are more likely to think: “I need to take this seriously.”

There is also the collapse of the narrative of inevitable progress, the belief that young people will always be economically better off than their parents, the growing dysfunction in society starting with the pandemic, all may be generating a tendency to look beyond economics for life satisfaction.

Of course we know that there is a negative correlation between religiosity and well-being, a correlation that holds across both nations and U.S. states. The worse off you are, the more religious you are. Further, there’s a positive correlation between income inequality (measured by the “Gini index”) and religiosity: the higher the inequality, the more religious people are. That the former produces the latter, so it’s not a spurious correlation, is supported by the fact that religiosity rises a year after inequality rises.  Likewise with falls of inequality and falls of religiosity. That’s not proof, but is support for the connection made famous by Karl Marx, a quotation that is often truncated to distort its meaning:

Religious suffering is, at one and the same time, the expression of real suffering and a protest against real suffering. Religion is the sigh of the oppressed creature, the heart of a heartless world, and the soul of soulless conditions. It is the opium of the people.

What Marx was saying was not that religion was good for people because it soothed them, but that it was bad for people because it was what people did when they could not find relief from their suffering and oppression through means that could actually improve their situation. They thus have to turn to the opium of belief.

The Baron sees evidence for God every time people have an aesthetic or spiritual experience.  Not just evidence for God, apparently, but evidence for Catholicism!:

Reflect on the experiences in your life where you feel, for a moment, you might have had an experience of something beyond this world, a moment in the English countryside, a phrase of music that tugs at the heartstrings, and ask yourself why you feel that, if material reality is really all there is. Consider too that most people in history, and indeed most people in the world today, have not had that belief, and maybe aren’t all wrong. Maybe western secular society doesn’t know everything about everything.

But of course people throughout the world have this kind of experience, people including atheists like Richard Dawkins and me. And not for a minute do we think that emotionality is evidence for gods. Is it evidence for Allah, and also for Xenu and Vishnu?

The evidence that these emotions and epiphanies are the product of material reality can be seen, for one thing, because you can have them simply by taking drugs. I remember once when I was in college, doing a science fellowship during the summer, I took LSD and walked through the quad (the “Sunken Garden”) at William and Mary.  There were high-school brass bands having some kind of competition, and, in my psychedelic daze, their ragged, dissonant music seemed like the most beautiful thing I’d ever heard. Was that evidence for God? Had I not been tripping, I would have run away in horror.

The Baron admits that Christianity is meaningless unles you believe its foundational truths. You don’t often see this kind of admission since “sophisticated” believers don’t like to admit it, nor will they say explicitly what they believe:

After all, the important thing about Christianity is not whether it makes you feel better or whether it is good for society, but whether it is true. If it is, we should all want to know that, and if it isn’t, we are right to reject it. The one thing we should not do is not properly consider it. And in Western society that is all too easy.

I’ve considered the “evidence”, which of course is almost entirely what’s in the Bible.  And I don’t buy it, as I suspect most of the readers here don’t.  And what about the gazillion other faiths of the world. Why does Frost reject Mormonism, Hinduism, Islam, and cargo cults but accept the “truth” of Christianity? (Like Christians, adherents to cargo cults keep waiting for a savior who never comes.) I’d like the Baron to tell me how he knows not just the Resurrection and Jesus’s “miracles” were true, but why the writing of the Quran is a bogus story. And why, among Christian religions, are the dictates of Catholicm true? (The Baron touts the revival of religion as involving mainly Catholicism and “Protestant evangelicals.)  Gimme that full-fat religion!

The Baron tells us why we should go to Church.

In an essay entitled Man or Rabbit?, CS Lewis gently mocked those who didn’t reject Christianity but tried to ignore it, not from disbelief, but from a suspicion that it might be true after all and that acknowledging it would be inconvenient – rather like someone who doesn’t open their bank statements for fear of what might be in them. Don’t be like that person. Face the issue head on. At least give Christianity a fair hearing. Show up to church this Easter. You never know what might happen.

I ignore Christianity because it’s a full-fat superstition supported by no evidence. I’m amused that he quotes C. S. Lewis, who I admit I find hilariously stupid about religion even though his Mere Christianity is probably the most influential work of popular theology ever. I’ve read it, of course, and I always have to laugh when I read “Lewis’s trilemma“—an argument for the divinity of Jesus and truth of his message. Lewis actually stole this argument from others, as several people had made it before him. Here’s Lewis’s version:

I am trying here to prevent anyone saying the really foolish thing that people often say about Him: I’m ready to accept Jesus as a great moral teacher, but I don’t accept his claim to be God. That is the one thing we must not say. A man who was merely a man and said the sort of things Jesus said would not be a great moral teacher. He would either be a lunatic—on the level with the man who says he is a poached egg—or else he would be the Devil of Hell. You must make your choice. Either this man was, and is, the Son of God, or else a madman or something worse. You can shut him up for a fool, you can spit at him and kill him as a demon or you can fall at his feet and call him Lord and God, but let us not come with any patronizing nonsense about his being a great human teacher. He has not left that open to us. He did not intend to. … Now it seems to me obvious that He was neither a lunatic nor a fiend: and consequently, however strange or terrifying or unlikely it may seem, I have to accept the view that He was and is God.

Of course there are alternatives to “liar, lunatic, or Lord”; I’m sure you can think of at least one: people made up what Jesus said in the Bible. You can read alternative criticisms here.

But the real question is whether Frost himself is a liar, lunatic, or Lord. And we already know the answer: he’s a Lord.

I guess I’m just splenetic on this day when people go to Church to worship something for which there’s no evidence. And, contra Frost, I won’t be showing up to church this Easter. Instead, I’m writing this post.

Categories: Science

A transitional fauna shows that the “Cambrian explosion” was happening before the Cambrian

Sun, 04/05/2026 - 6:30am

The Cambrian Period, beginning at 538.8 Ma (million years ago) and lasting about 52 million years, is famous for marking the transition from simple and largely unicellular animals to, beginning at the period’s inception, representatives of modern groups.  This apparently rapid onset of modern forms of multicellular animals constitutes the famous “Cambrian Explosion.”

The Cambrian was preceded by the 96-million-year-long Ediacaran period, extending from 635 million years ago to the beginning of the Cambrian. The Ediacaran fauna, consisting of some multicellular animals of unknown affinity and things looking like members of some modern groups like cnidarians (represented today by jellyfish, corals and anemone). But most of the Ediacaran groups appeared to have died out at the end of the Ediacaran, and for unknown reasons.

The boundary between the Ediacran and the Cambrian thus marks a major transition in animal life.   Many of the “modern” groups that first arose during the Cambrian don’t have apparent ancestors in the Ediacaran, and so those modern groups were thought to have evolved almost instantaneously (in geological time!). But surely modern groups had ancestors during the Ediacaran: unless you’re a Biblical fundamentalist, you realize that ancestors of modern groups had to have existed well before the Cambrian explosion.

Now a paper in Science, based on a fossil group called the Jiangchuan Biota that spans the period from 559-534 million years ago, shows that representatives of “modern” groups seen in the Cambrian explosion were indeed present in the late Ediacaran, pushing back the time of origin of modern phyla 4-5 million years.  This conclusion was possible because of the remarkable preservation of the animals (and some algae), all present as carbonaceous films on rocks—the same kind of films (presumably due to rapid burial) that enabled us to see the remarkable Burgess Shale fauna of the middle Cambrian. The new find was in the province of Yunnan in Southwestern China.

You can see the paper by clicking the screenshot below, reading the pdf here, or reading the shorter blurb at an Oxford University sit. at the bottom. All photos below are taken from the paper.

I won’t go into all the terminology involved in identifying the groups but will show a few fossils from the paper strongly suggesting that some “modern” groups arose in the late Ediacaran.

First, an anomalous animal that appears to be some kind of worm, but one with a “holdfast” disc on its butt. We don’t know what this one is, but it has oral projections or tentacles. The disc is very clear:

Another wormlike animal (note that these are small: a few millimeters) having a clear oral region. Again, we’re not sure what this is, but the preservation as a carbon film is remarkable:

A deuterostome (animals where the first opening in the embryo becomes the anus rather than the mouth), a group thought to have appeared in the Cambrian but here seen in the Ediacaran: this one resembles  Herpetogaster, known from the early Cambrian which, according to Wikipedia, “possessed a pair of branching tentacles and a tough but flexible body that curved helically to the right like a ram’s horn and was divided into at least 13 segments”. This one, like Herpetogaster, has tentacles (at leat four) and a stalk.  It’s interpreted as a relative of acorn worms, relatives of modern echinoderms which are hemichordates, the closest living group to modern chordates (animals with notochords and a dorsal nerve chord, which include all vertebrates).

The one below,described in the paper as “Margaretia-like animal now known as a dwelling tube for an enteropneust hemichordate worm”. It’s also described as having “regular, oval-shaped holes running along its length”. Again, we see what is likely an early hemichordate, showing that the relatives of modern chordates seem to have been present several million years before the Cambrian explosion began.

The one below is identified as a ctenophore, or comb jelly, a phylum of early animals previously known only from the mid-Cambrian. “OS” stands for “oral skirt”, described as “a specialized, often scalloped, muscular, or rigid structure surrounding the mouth, primarily found in Cambrian-era fossil comb jellies such as Ctenorhabdotus and Thalassostaphylos. Unlike modern ctenophores, these ancient species used the skirt for feeding, potentially to engulf large prey.”

Finally, this animal is thought to be an early cnidarian with tentacles and a holdfast (HF). Although one form identified as a cnidarian had already been recognized from the Ediacaran, here we have another that’s different, showing a radiation of cnidarians before the Cambrian.

These fossil data support already-existing molecular data suggesting that animal groups had already evolved and diversified before the Cambrian, though until now no fossils, or only a few suggestive fossils, were known.

The authors’ summary below, though written in scient-ese, basically says that a major radiation of animal phyla had already begun before the Ediacran/Cambrian boundary, but we did not know about it because the conditions for forming this kind of trace fossil, requiring rapid burial in marine sediment (and subsequent finding by investigators!) were infrequent:

The new Jiangchuan animal fossils, dominated by bilaterians of apparently diverse affinities, with rarer fossils more typical of late Ediacaran deposits, could be described as a “Cambrian-type” assemblage from the late Ediacaran. A dominantly bilaterian assemblage from the late Ediacaran may not have been discovered until now as a result of the paucity of carbonaceous compressions from this time, hinting at a broader taphonomic bias (51).

If you want a short, readable summary of the importance of this fine, click below to read a shorter summary from Oxford University.

Categories: Science

Caturday felid trifecta: “Crazy cat lady” banned from feeder ferals, gets big support; the cats of Istanbul; why cats make biscuits; and lagniappe

Sat, 04/04/2026 - 9:00am

We have our usual three items plus lagniappe today.  Read on:

First, click below to see a recent Guardian story about how a mean local council tried to ban this British woman from feeding feral cats, and how the neighbors (and a charity) stepped up to help her.

An excerpt:

“Two ladies from York have just been in,” said Collette Boler at the till of her small cafe in Thurnscoe, near Barnsley. Her voice began to choke up.

“They came in with a box of chocolates and a card, a box of cat food, a bag of cat biscuits and just said ‘carry on doing what you’re doing, you’re absolutely fabulous’. And a man’s just given me a tenner for cat food. It’s been incredible.”

The grandmother of seven has become an unlikely icon for cat lovers everywhere after finding herself banned from feeding a colony of feral felines she has looked after for 20 years.

She had been visiting them twice a day, including Christmas Day, even spending her own money on vet bills and having some neutered, which she admitted cost “a fortune”.

But two weeks ago Boler – affectionately known as the “crazy cat lady” – was subject to what some of her supporters see as a heavy-handed and overzealous ban, after a neighbouring business complained to the council over cat faeces on its premises.

Now if Boler continues to feed the cats, she will be issued with a community protection notice – a type of antisocial behaviour order – which could result in a fine of up to £2,500.

But she has been overwhelmed with support after others stepped in to help, including neighbours, strangers and a national cat charity.

. . .The Cat Action Trust 1977 has stepped in by writing to Barnsley council to urge it to repeal Boler’s ban.

“Feeders like Collette actually play a really important role,” said Alice Ostapjuk-Wise, a volunteer for the national charity which advocates for the “invisible issue” of cats that have never had contact with humans. “[Feeders] can alert us when a new cat arrives that might not be neutered.” The charity carries out neutering to control their numbers.

The Cat Action Trust 1977 has collected food for the Barnsley cats, which are frightened of humans and mostly stay out of sight, though the council has not made clear whether it too will face consequences for feeding them.

Ostapjuk-Wise said: “We just want to do what we can because some councils actually choose to exterminate feral cat colonies, and that’s the last thing we want.

“The path they seem to be taking so far appears to be very inhumane, basically starving the cats. That’s not going to solve the problem.”

. . .Barnsley council did not respond to a request for comment but previously told local media it recognised Boler’s “good intentions” but the community protection warning was “an early step to prevent the situation from getting worse”.

“We always aim to protect public health and safety, and we encourage anyone concerned about stray animals to work with recognised animal welfare organisations, so support can be provided safely.”

Boler said she had “never expected” so much attention. “I just wish they’d let me feed my cats,” she said. “That’s all I want. That’s all I’ve ever wanted.”

The Barnsley council sucks. Just because they don’t like feral cat feces, they’re starving the cats to death. There is a change.org petition with nearly 4,000 signatures that you can sign, and I just signed it. Please join me; it costs you nothing and may help save the Barnsley cats from the meanies.

And here’s a FB video with an interview of Boler, who seems very nice.

*********************

This is a wonderful 14-minute video of the cats of Istanbul and how the locals care for them. I love that city–not just for the fact that it harbors “strays” who are effectively pets, but also because it’s beautiful and has lots of attractions.

This is really what it’s like to be in Istanbul. If you want a good commercial movie about Istanbul’s cats, do watch the movie “Kedi” (the Turkis words for cats), made in 2016.  It has a 98% critics’ rating rating on Rotten Tomatoes, a rating that only the very best movies get.

I*********************

The World’s Best Cat Litter site answers a recurring question among cat owners:

There are a variety of answers. Some condensed answers:

It’s in their nature

Kneading is an instinctual trait that begins in kittenhood. When kittens are feeding from their mother, they push on her mammary glands with their paws to help stimulate milk flow. For the mother, this releases oxytocin, also known as the bonding hormone.

You might notice your cat dribbling a little when they are kneading. This is natural too! Some cats go into “milking mode” even though they are older and fully weaned. They just get in the zone and subconsciously expect the milk that would have come from their mother.

They’re claiming their territory

Did you know that cats have scent glands in their paw pads? Scent glands are a way for cats (and other animals) to mark their territory, a trait that is especially important in the wild.

Cats tend to make biscuits on their favorite human, other pets in the home, and their favorite blankets. As a cat kneads, they release their scent to mark something as theirs. So if your cat has a habit of kneading on your stomach, congratulations! You are officially their property.

They’re making their bed

In the wild, felines knead tall grass to create a comfortable space for sleeping.

At home, your cat might like to make biscuits on your blankets, clothes, or even your body. This just means they are trying to get cozy and snuggly for a long cat nap.

They love you!

Kneading is typically a behavior that happens when a cat feels happy and secure, but they aren’t necessarily expecting milk from the process.

They’re going into heat

Female, unspayed cats are known to knead their paws before “estrus,” or going into heat. The act of kneading is a sign to male cats that the feline wants and is able to mate.

There’s further information about whether you should prevent them from kneading (no!), and advice to trim their nails so they don’t do damage when they make biscuits.

Or you can watch this explanatory video:

*********************

Lagniappe: An appropriate tweet showing a street sign in Istanbul asking people to be attentive for road cats:

Street Cat Sign in Istanbul pic.twitter.com/ecxZeMny17

— DaVinci (@BiancoDavinci) March 18, 2026

. . . and an educational FB meme from Debra:

h/t: Matthew, Ginger K.

Categories: Science

The woodies are still here

Fri, 04/03/2026 - 12:27pm

The woodies seem to fly in every day about 11 a.m. and are still here when I leave about 2. I still have no names for them, as nothing suggested struck the right chord.  Here’s a preview of the next set of duck photos, which will concentrate on the wood ducks as Vashti is nesting.

Feel free to suggest names, which should reflect the fact that they’re perky and gorgeous. (The last pair was named “Frisky” and “Ruth”, with Ruth having a Jewish name.)

Click to enlarge:

Categories: Science

Bart Ehrman schools Ross Douthat on Christianity and how to find Biblical “truth”

Fri, 04/03/2026 - 7:40am

The NYT “opinion” piece below is very long, and is in fact a transcript of a discussion of Christianity pitting Biblical scholar and atheist Bart Ehrman against dyed-in-the-wool Catholic Ross Douthat.  If you’ve read this website lately, you’ll know that Douthat is all over the place touting Jesus: he’s published a new book, he’s debated Steve Pinker on God, he’s written a gazillion columns highlighting his book and its reasons why we should be Christians, and in today’s piece he and Ehrman discusses the “truth” of the New Testament.

I have little respect for Douthat because his case for a divine being in general, and for Christianity in particular, simply involves the same tired old (and not dispositive) assertions, many of them based on science (e.g. the “fine-tuned” universe, the mystery of consciousness, etc.).  Douthat’s drunk the whole chalice of Kool-Aid, and is not self-critical.

Ehrman, on the other hand, is an impressive guy. He started out as a Biblical literalist and practicing fundamentalist Christian, eventually becoming a Baptist preacher. Then he realized, based on the existence of inexplicable evil in the world, that the whole Jesus-and-God story was largely bushwa, and he wrote a bunch of books showing why. He knows his Bible better than does Douthat, and can quote chapter and verse without even looking at the book.

Now Ehrman does think that there’s a factual core of the New Testament, in that he thinks the evidence for the existence of a Jesus person who taught disciples is an absolutely secure historical fact. So, he thinks, is the Crucifixion, though not the Resurrection: Ehrman has no truck with miracles, adhering to Hume’s argument that unless they are more probable than the reliability of their witnesses, they shouldn’t be accepted.  Ehrman also has no truck with mythicists (I flirt with such a position) who aren’t convinced that there was a real Jesus person. Ehrman thinks that historical-Jesus believers, who are indeed in the majority among Biblical scholars, have a solid case. (The evidence for that, though, is based largely on what’s written in the Bible.)

[UPDATE:  See comment 3 below by Roger Lambert, citing Richard Carrier’s critique of Ehrman’s view that a Jesus person absolutely existed. Carrier is a “mythicist” who doubts the existence of a Jesus person. You can see more of Carrier’s arguments here.]

At any rate, you can either hear the discussion (82 minutes) or read it (the latter is a lot faster for me) at the NYT link below. It is an object lesson (from Ehrman) on how to assess the Bible as “truth”, and also how a historian uses evidence when confronting Scripture. Ehrman spends a lot of time schooling Douthat on these issues, and Douthat comes off as a credulous schoolboy.

The main point that Ehrman wants to make in this discussion is that Jesus and then Christianity introduced to the world the idea that we should love people whom we don’t know, a view that has led to good things like hospitals and orphanages. Ehrman has just published a new book on this thesis: Love Thy Stranger: How the Teachings of Jesus Transformed the Moral Conscience of the West. 

I have a few doubts about that, including the fact that Ehrman takes it for granted that this was one of Jesus’s teachings without good evidence for that claim, and that the idea of loving others whom you don’t know was not invented by Christians. Ehrman may be right with respect to the West, so his book (which I haven’t read) at least has the geography of love correct, but he’s on shakier ground saying that loving strangers was indeed a teaching of Jesus. Ehrman even notes that Jesus didn’t say to love everyone, only the members of one’s tribe—Israelites. And of course some of Jesus’s teachings, like “take no thought for the morrow” or “abandoning your family and loved ones to follow me”, aren’t ones we should follow. After all, Jesus did also say that the end of the Earth and his return was nigh:

Verily I say unto you, There be some standing here, which shall not taste of death, till they see the Son of man coming in his kingdom. (Matthew 16:28).

Ehrman would surely argue that the last verse, while Jesus may have said it, was simply untrue. But if Jesus did say it, Christians have to explain it.  The fact is that, as even Ehrman admits, we have no idea what Jesus said. Ehrman sort of admits that, but then apparently has some secret way to separate what Jesus really said versus what people made up about him later.

Click the screenshot below to read, or see the article archived here. If you have some time, I think it’s worth hearing or reading.

I’ll give a few quotes from the discussion, most of them from Ehrman (indicated with an “E”; Douthat’s quotes are prefaced with a “D”). These quotes are indented, while my comments are flush left.

Ehrman’s argument:

I am absolutely not arguing that Jesus introduced the idea of love or the idea of altruism into the world. What I am arguing is that we, today, almost all of us — whether we’re Christian, agnostic, atheists, whatever we are in the West — when there’s a disaster that happens, we feel like we ought to do something about it. There’s a hurricane, there’s wildfires, there’s an earthquake, and we feel like we ought to do something. We might send a check, for example, or we retire and we decide to volunteer in a soup kitchen. We’re helping people we don’t know and probably never will know, and who we may not like if we did get to know them.

So why do we help them? My argument in the book is that sense, that we should help people in need, even if we don’t know them, ultimately derives from the teachings of Jesus. In Greek and Roman moral philosophy at the time, this was not an issue at all — you were not supposed to be helping people just because they were in need. Jesus based it in large part on his Jewish background, but with some transformations of what he himself knew growing up. He is the one who made this part of our conscience.

. . .The idea is that if you’re going to love your neighbor, it doesn’t just mean somebody who’s within your own religion or your own ethnicity or your own nation. It means, if somebody’s in need, that’s your neighbor. That’s what it means to love your neighbor as yourself.

So Jesus is getting the idea of love your neighbor and even love your stranger as yourself from his Jewish heritage. But within Israel, it’s “Love your fellow Israelite as yourself.” And Jesus is now universalizing it.

Part of the thesis of my book is that that mentality is what led to huge institutional changes in the West, including the invention of public hospitals — orphanages, old people’s homes, private charities dealing with hunger and homelessness, governmental assistance to those who are poor — all of those are Christian innovations you can establish historically.

. . . What I am saying is that if people claim to be followers of Jesus, they ought to follow his teachings. And his teachings are quite clear that you should care for people who are not like you — the other. You’re not supposed to bomb them back to the Stone Age, and you’re not supposed to make them suffer because you don’t like them or you don’t want them among you. You’re supposed to take care of them.

(Ehrman is referring at least in part to recent wars, and he admits that he’s a political liberal, but denies that his argument is in any way political. I believe him.) But yes, if you claim to follow Jesus’s teachings, you should follow Jesus’s teachings. And then you should leave your family and give away everything you have.

But of course the argument that The Love Everyone Idea came from Jesus is an untestable assertion, since we can’t repeat history without a Jesus person.  But if Jesus didn’t teach that, then it came from somewhere else and can be attributed simply to humanism and not credited to Christianity. It could have simply been one of the many things made up by people who wrote the Bible. After all, Ehrman claims that much of the Bible is false.

How about these teachings of Jesus?

From Matthew 6 (King James version, which is the version I’ll use): take no thought for the morrow:

Therefore I say unto you, Take no thought for your life, what ye shall eat, or what ye shall drink; nor yet for your body, what ye shall put on. Is not the life more than meat, and the body than raiment? 26 Behold the fowls of the air: for they sow not, neither do they reap, nor gather into barns; yet your heavenly Father feedeth them. Are ye not much better than they? 27 Which of you by taking thought can add one cubit unto his stature?  28 And why take ye thought for raiment? Consider the lilies of the field, how they grow; they toil not, neither do they spin: 29 And yet I say unto you, That even Solomon in all his glory was not arrayed like one of these. 30 Wherefore, if God so clothe the grass of the field, which to day is, and to morrow is cast into the oven, shall he not much more clothe you, O ye of little faith? 31 Therefore take no thought, saying, What shall we eat? or, What shall we drink? or, Wherewithal shall we be clothed? 32 (For after all these things do the Gentiles seek:) for your heavenly Father knoweth that ye have need of all these things. 33 But seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you.

Follow me, not your family or loved ones (Luke 14:25-27):

25 And there went great multitudes with him: and he turned, and said unto them, 26 If any man come to me, and hate not his father, and mother, and wife, and children, and brethren, and sisters, yea, and his own life also, he cannot be my disciple. 27 And whosoever doth not bear his cross, and come after me, cannot be my disciple.

Why are Christians supposed to follow the love commandment but not the others? I don’t know, nor does Ehrman tell us.

A further problem with Ehrman’s claim is, as he says below, to Jesus “your neighbor” doesn’t just mean anybody, but apparently only fellow Israelites— members of your tribe.  But that’s not what Ehrman thinks we should do today; he think we need a new interpretation of Jesus’s words to fit the 21st century. And that means loving everyone:

E:  You can’t simply take the teachings of the New Testament and transplant them into the 21st century. If any government tried to institute, as their governmental policy, the Sermon on the Mount, they’d last about two days, period.

I’m not saying that it’s this kind of simplistic equivalent. What I am saying is that if people in power claim to be Christian, they ought to take very seriously what that means. I’m not saying that it’s going to necessarily affect immigration policy, for example. But the Bible is quite clear, even in the New Testament, that “Love your neighbor as yourself” meant your fellow Israelite, or it explicitly states that anybody who immigrates into Israel is to be treated like an Israelite.

This baffles me.  He is updating Jesus’s words here, and so we should follow Ehrman’s interpretation, not Jesus’s supposed teachings themselves. How do we know what, according to Ehrman, Jesus really said or taught, and what words were put into his mouth later? We don’t know from this interview, though perhaps it’s in Ehrman’s new book.

Ehrman: Well, I think there are credible historical narratives in the Gospels. I think we can find things that Jesus really did say and really did do. But I don’t think that you can simply read the Gospels and think: Oh, that’s what Jesus really said and did.

There are a lot of reasons for that.

Douthat: Give me three reasons.

Ehrman: They are contradictory to each other, describing the same event, where they both can’t be right because they’re contradictory. They are written by people who were not there at the time, who didn’t live in the Jewish homeland, who did not speak Aramaic. They’re living decades later and are recording accounts that they’ve heard. So that’s two things: The authors living much later, and the contradiction.

The third thing is: These authors got their stories from somewhere. We don’t know where the authors lived and we don’t know who the authors were. The Gospels circulated anonymously before they had names attached to them. So we don’t know. We call them Matthew, Mark, Luke and John. But we don’t ——

All true. But note Ehrman’s statement, “I don’t think that you can simply read the Gospels and think: Oh, that’s what Jesus really said and did.” He may think that the consistency of Jesus’s “love” message indicates that a Jesus person really taught that, but there’s also a consistency in Jesus saying that he was the son of God. Yet Ehrman believes the former but not the latter.

Here’s Ehrman explaining why he became an atheist: he couldn’t accept theodicy:

E:  I taught at Rutgers for a few years, and when I was there, I was asked to teach a class called The Problem of Suffering in the Biblical Tradition. And when I got asked to teach the class, I thought it would be a great idea because I had long thought that every author of the Bible in one way or another is trying to wrestle with the problem of, especially, why the people of God suffer.

And I had realized by this time that there’s not an answer in the Bible — there are lots of different answers. And some of these answers are in conflict with each other.

. . .I came to think that the idea that any monotheistic religion has a problem with the existence of God, given the state of suffering in the world.

And I’m not a radical atheist who insists there is no God, but I don’t think there is. I don’t think there’s any kind of supernatural power that’s overseeing the world, that is active in people’s lives, that actually answers prayer. I don’t believe a God like that exists.

Douthat doesn’t have an answer for that.

Finally, is it true that Jesus did introduce the idea of loving your neighbor to the West? Well, my friend the philosopher Maarten Boudry, discussing this with me via email, decided to ask the bot Claude. Here’s the question (in bold) and Claude’s answer:

Is it true that there were a lot of Axial Age religions that promoted counterintuitive and challenging moral codes, like loving your enemy and turning the other cheek, apart from Christianity?

Yes, this is a well-documented observation among historians of religion and philosophy. The Axial Age (roughly 800–200 BCE, a term coined by Karl Jaspers) saw a remarkable convergence across several civilizations, where thinkers independently developed moral and ethical frameworks that challenged conventional human instincts like tribalism, revenge, and self-interest.

Here are some notable parallels:

Buddhism (5th century BCE) is perhaps the most striking example. The Buddha taught mettā (loving-kindness) toward all beings, including those who harm you. The Dhammapada contains passages urging practitioners to overcome hatred with love and to respond to anger with calm — very close in spirit to “love your enemy.”

Confucianism and Mohism in China offered related ideas. While Confucius was more measured (when asked about repaying injury with kindness, he replied “repay injury with justice”), Mozi (5th century BCE) went further with his doctrine of jiān ài (universal or impartial love), arguing that people should care for strangers and even rival states as much as their own — a radically counterintuitive position that was widely debated precisely because it cut against natural partiality.

Jainism developed ahimsa (non-violence) to an extreme degree, extending compassion and non-harm to all living creatures, including insects. This demanded extraordinary self-discipline and restraint even toward those who might threaten you.

Stoicism in Greece taught that all human beings share in a universal rational nature, and that anger and vengeance are failures of reason. Marcus Aurelius (though later than the Axial Age proper) wrote extensively about responding to hostility with understanding rather than retaliation, building on earlier Stoic foundations.

Zoroastrianism emphasized the moral duty to actively choose good over evil, framing ethics as a cosmic struggle that required personal sacrifice and integrity beyond mere self-interest.

The Hebrew prophetic tradition — figures like Amos, Hosea, and Isaiah — challenged their own society with demands for justice toward the poor, the stranger, and the marginalized, often at great personal cost.

What makes the Axial Age so fascinating to scholars is that these developments happened largely independently across cultures that had little or no contact with each other. The common thread seems to be that as societies grew more complex and urbanized, thinkers began reflecting more deeply on the gap between how people naturally behave and how they ought to behave — and many of them arrived at strikingly similar conclusions about the need to extend moral concern beyond one’s in-group.

So Christianity’s ethic of enemy-love, while distinctive in its specific theological framing, was part of a broader human pattern of moral discovery during this period. That doesn’t diminish its significance, but it does place it in a richer historical context.

Even in the West, then, there were antecedents to Jesus’s message of love.

While I have a lot of respect for Ehrman, I don’t understand how he managed to separate the wheat of “love they neighbor” from the chaff of “follow me and neglect your family and friends”.  I do think, though, that the message of treating everyone with respect (I can’t bring myself to love everyone!) would have come from humanism as a guideline equal in force to that of “love thy neighbor.” Would we lack hospitals and orphanages if Christianity didn’t exist? (Go read about what Catholic Ireland did to orphanages!)  Steve Pinker has pointed out the reason for this in recent years: we have no special privilege simply by being us. And remember that although love may have been the Christian message, for two millennia avowed Christians have flouted that dictum. It doesn’t, then have any pride of place over the similar dictum of humanism.

Categories: Science

Jesus ‘n’ Mo ‘n’ a primer on Christianity

Fri, 04/03/2026 - 7:00am

The latest Jesus and Mo, called “plan2” is an older strip but characterized as one “in which Christianity is explained”.  When it’s put this way, the nonsensical nature of the story becomes clear.

Categories: Science

Readers’ wildlife photos

Fri, 04/03/2026 - 6:15am

Edmund Ault has sent us some photos of mallard (Anas platyrhynchos) ducklings, and you can never see too many of these.  (We should have some in Botany Pond by April 19.)  Edmund’s captions are indented, and you can enlarge the photos by clicking on them.

These ducklings are on the River Witham, in the centre of Grantham, Lincolnshire, and are the first I have seen this year. I regularly feed the ducks on this stretch of river, but I wasn’t aware that there was a nest until I saw the brood this morning; I think they must have hatched first thing this morning (31st March). And what a brood it is: 16 ducklings!

Most of the brood are sheltering under their mother:

More:


The mother duck led her brood for a walk away from the river; when she got back to the river she happily jumped off a small concrete wall (about 3 feet high) and expected her brood to follow suit – which all of them did, although reluctantly:

The brood moved upstream and tried to scale a weir; although the weir is only about a foot high the rush of water was far too great for them and eventually they turned around and went back:

Categories: Science

Do astronauts carry suicide pills?

Thu, 04/02/2026 - 8:45am

This is a question I’ve entertained for a long time, probably because I’m preoccupied with death.  But I was curious about what would happen if astronauts, like the ones going around the Moon now, found themselves stranded in space with no way to get home, facing death from oxygen depletion or starvation. Or what would happen if the astronauts who were on the Moon years couldn’t start up the Lunar Module to get back to the Command Module and then back to Earth? Would they have been carrying something that would allow them to commit suicide quickly, avoiding a prolonged death?

I asked Jim Batterson, our resident NASA expert, and he didn’t know the answer.  I then turned to the AI bot Grok, which I got for free when X (“Twitter”)—for reasons unknown—gave me a free blue checkmark.

My question to Grok  is in bold below, and the short answer (indented) is that no, American astronauts don’t carry anything to do themselves in, though one Russian astronaut did.  Grok went though the data in 11 seconds, and spat out the following. Note that there are references (the bot gives you the links, which I haven’t included) to check the statements.

Do the astronauts carry cyanide capsules or anything they can use to commit suicide if they are stuck in space? Thought for 11s

No, astronauts do not carry cyanide capsules or any dedicated suicide pills as standard equipment.

iflscience.com

NASA has never issued suicide pills (sometimes called “L-pills” or cyanide capsules) to its astronauts, including during the Apollo lunar missions or on current ISS and Artemis programs. Astronaut Jim Lovell (Apollo 13 commander) explicitly debunked this long-standing rumor: “Since Apollo 13 many people have asked me, ‘Did you have suicide pills on board?’ We didn’t, and I never heard of such a thing in the eleven years I spent as an astronaut and NASA executive.”

iflscience.com

The idea appears to stem from spy-movie tropes, urban legends, or sci-fi (e.g., the film Contact), but it has been consistently denied by NASA and astronauts. Multiple sources, including direct statements from astronauts, confirm that no such pills have ever been part of U.S. spaceflight medical kits.

quora.com

Why the rumor persists, and why pills aren’t needed anywayIn a worst-case scenario of being stranded in space with no rescue possible (e.g., a failed re-entry or detached during a spacewalk), astronauts have pointed out that the vacuum of space itself provides a relatively quick way to end life if someone chose to—by simply opening a suit valve or venting the spacecraft’s atmosphere. This would cause unconsciousness in seconds and death shortly after, making a pill unnecessary.

theguardian.com

NASA’s focus is on prevention and survival: rigorous psychological screening, crew training, rescue protocols (e.g., multiple docked return vehicles on the ISS), and detailed medical kits. Those kits contain painkillers, anti-nausea drugs, antibiotics, etc., but nothing lethal like cyanide.

nasa.gov

If an astronaut were to experience a mental health crisis in space (e.g., becoming suicidal or psychotic), NASA has written procedures: crewmates are instructed to restrain the person with duct tape and bungee cords, monitor them, and administer sedatives like Haldol or Valium (orally or by injection if needed). The goal is stabilization, not euthanasia.

cbsnews.com

One historical exception (Soviet side) The only verified case involves Soviet cosmonaut Alexei Leonov (the first person to spacewalk, in 1965 on Voskhod 2). He stated that he was issued a suicide pill for that specific high-risk mission—in case he couldn’t re-enter the spacecraft and his crewmate had to leave him behind in orbit. His suit ballooned during the walk, and he barely made it back inside after partially depressurizing it. This was not standard practice for the Soviet program overall, and no evidence exists of it being routine for cosmonauts then or now.

iflscience.com

In short, modern astronauts (NASA, ESA, Roscosmos, etc.) rely on engineering, training, and international rescue plans rather than personal suicide options. No agency equips crews with cyanide or equivalent for “stuck in space” scenarios.

Categories: Science

My article in Skeptic: Coyne vs. Shermer on Free Will

Thu, 04/02/2026 - 7:30am

In mid-February, Michael Shermer wrote a piece in Quillette called “The truth about free will,” the truth being that we have it, but in the compatibilist rather than the libertarian sense.  This article was a shortened version of a free-will chapter included in Shermer’s new book,  Truth: What It Is, How to Find It, and Why It Still Matters

I thought that Shermer’s article was confusing, largely because his own definition of free will seemed to smuggle in a bit of libertarianism, but also because the argument for free will seemed to say this: “We have free will because we feel like we have free will.”

Shermer then responded in the pages of Skeptic, the magazine he founded in 1992 and still edits; his response was called “Free will, determinism, and compatibilism: Shermer responds to Jerry Coyne.”  He once again argued for compatibilism, buttressing his argument with statistics showing that most philosophers accept compatibilism (59.1%), with minorities being libertarian free-willers (13.7%), determinists (12.2%, I’m in this camp though I’m not a philosopher), and those who are “other” (14.9%).  The gist of his argument seemed to be this:

I agree with Jerry and Dan that we live in a determined universe governed by laws of nature. But I disagree with Jerry that this eliminates free will, or if you prefer “volition” or “choice” (again, this entire field is, to use Jerry’s term, “muddled” with confusion of terminology). My compatibilist work-around is “self-determinism,” in which while we live under the causal net of a determined universe, we are part of that causal net ourselves, helping to determine the future as it unfolds before us, and of which we are a part. My compatibilist position is based on the best understanding of physics today. Let me explain.

Physicists tell us that the Second Law of Thermodynamics, or entropy, means that time flows forward, and therefore no future scenario can ever perfectly match one from the past. As Heraclitus’ idiom informs us, “you cannot step into the same river twice,” because you are different and the river is different. What you did in the past influences what you choose to do next in future circumstances, which are always different from the past. So, while the world is determined, we are active agents in determining our decisions going forward in a self-determined way, in the context of what already happened and what might happen. Thus, our universe is not pre-determined in a block-universe way (in which past, present, and future exist simultaneously) but rather post-determined (after the fact we can look back to determine the causal connections), and we are part of the causal net of the myriad determining factors to create that post-determined world.

Free will, Shermer wrote, is somehow to be found in billions and billions of neurons, (to paraphrase Sagan):

Coyne is unhappy with my invoking of “emergence” and says I’m being rude to him and Sapolsky and Harris in accusing them of “physics envy,” but that’s what it is! Here, for example, is Sapolsky defending his belief that free will does not exist because single neurons don’t have it: “Individual neurons don’t become causeless causes that defy gravity and help generate free will just because they’re interacting with lots of other neurons.”

In fact, billions of interacting neurons is exactly where self-determinism (or volition or free will) arises. This is why I like to ask determinists: Where is inflation in the laws and principles of physics, biology, or neuroscience? It’s not, because inflation is an emergent property arising from millions of individuals in economic exchange, a subject properly described by economists, not physicists, biologists, or neuroscientists.

I found that confusing because I saw no freedom in simply saying that humans are part of the “causal net of a determined universe.” And I was confused by the claim that “while the world is determined, we are active agents in determining our decisions going forward in a self-determined way, in the context of what already happened and what might happen.” I didn’t understand that, and it seemed to smuggle some magic into the definition. And, as I’ll show below by quoting Sam Harris, I think that compatibilism misses the key feature of most people’s view of free will (yes, there are surveys): “We could have done other than what we did.”  If you say, “yes,” then you are a free willer, but have to specify what aspect of the universe enables us to have done otherwise. If you say, “No, never,” then you are either a determinist or a compatibilist. Determinism needs no further explication, but compatibilism demands that you confect a new definition of free will—one that insists that we have it despite physical determinism.

Now there are at least a half-dozen versions of compatibilism, each proposing a different definition of the “free will” we supposedly have, so compatibilists themeslves have incompatible views about free will! It’s my belief from reading Dennett and others that compatibilism is pursued by people who think that if we don’t think we have some sort of free will, society will fall apart. People will think that without free will, we lack moral responsibility, and apart from that, we’ll all become nihilists unwilling to even get out of bed. After all, what’s the point if everything’s determined?

I have answered both of these assertions before, saying that determinists like me are not nihilists, that society can function even realizing that determinism is true, because people still feel like they have free will, and that we can have “respnsibility” without needing to have “moral responsibility,” which assumes we could have behaved otherwise.

But I’ve written about all this before. Michael was kind enough to allow me to respond to his response in the pages of Skeptic, and you can read my 2000-word response by clicking the screenshot below, or reading the article archived here. (The title comes from an old novelty song, “Yes! We have no bananas,”)


I’ll give just a few quotes from my piece; it’s short enough that you can read it in a few minutes.

[Shermer’s] smuggled-in dualism becomes clear when Shermer claims that although the action of individual neurons may be determined, “billions of interacting neurons is exactly where self-determinism (or volition or free will) arises.” But how can one neuron be governed by the laws of physics but a group of interacting neurons not be governed by the laws of physics. If they are, then there is no freedom, no volition, no “willed” control of our behavior, and no ability to have done otherwise. Yet Shermer argues that when a group of neurons cooperates, some kind of “will” arises. This dilemma won’t be resolved until Shermer explains the relevant difference between the behavior of one neuron and of a group of neurons.

. . .As Shermer notes, 59 percent of surveyed philosophers are compatibilists while the rest are almost equally divided between libertarians, determinists, and those with no opinion. He deems philosophers the “most qualified people” to pronounce on the problem, but are philosophers more qualified than neuroscientists or physicists? As Sam Harris (a neuroscientist and a determinist) said:

[Compatibilism] ignores the very source of our belief in free will: the feeling of conscious agency. People feel that they are the authors of their thoughts and actions, and this is the only reason why there seems to be a problem of free will worth talking about.

. . . Compatibilism amounts to nothing more than an assertion of the following creed: A puppet is free as long as he loves his strings. [JAC: I love that line.]

Importantly, the “folk” conception of free will—the libertarian version—is what most people think they have. It is that version that permeates society, the legal system, and, of course, religion, and is therefore the most important version to discuss.

And my ending:

Finally, Shermer poses what he sees as an unassailable challenge to my determinism:

In fact, billions of interacting neurons is exactly where self-determinism (or volition or free will) arises. This is why I like to ask determinists: Where is inflation [of the monetary sort] in the laws and principles of physics, biology, or neuroscience? It’s not, because inflation is an emergent property arising from millions of individuals in economic exchange, a subject properly described by economists, not physicists, biologists, or neuroscientists.

That is a red herring. Like all phenomena in human society, you won’t find monetary inflation in the laws of physics. Nor will you find academics, music, sports, or any other human endeavor. The question is not whether these phenomena are in the laws of physics, but whether they result from the laws of physicsas emergent phenomena wholly compatible with underlying naturalism. And Shermer himself said yes, they do: “we live in a determined universe governed by laws of nature.”

The problem of free will is “insoluble” only insofar as Shermer, trying to retain an idea of self-control, and ignoring the massive body of data on affecting volition, has confected a new definition that simply redescribes human behavior. The important question is this: “Is there physical determinism of human behavior or not?” Both Shermer and I agree that there is. In the end, however, Shermer seems to argue that we have free will because we feel like it. One might as well say that there’s a God because we feel like there is one.

That’s it; you can read the argument and come to your own conclusions. For some reason I can’t stop arguing about free will. I guess my persistence is also determined. . .

Categories: Science

Readers’ wildlife photos: a paucity

Thu, 04/02/2026 - 6:15am

I have enough photos for about 1½ wildlife posts, the half-post being a collection of singletons.  I’m saving all these to fill in lacunae, but as you see there’s a need for more photos. There was a time when I didn’t have to beg for photos, but since people haven’t sent many in, yes, I’m on my knees. At any rate, if you have good photos, of the quality normally posted here, by all means send them in.

Thank you!

Categories: Science

The Artemis 2 launch is set to go in half an hour; watch it here

Wed, 04/01/2026 - 2:59pm

The ten-day around-the-Moon mision launches at 6:26 pm Eastern US time, about 26 minutes from when this is posted.  Actually, that is the start of a 2-hour launch window.  Stay tuned!

Watch the official NASA broadcast below.

Categories: Science

Rick Beato: Taylor Swift vs. The Beatles

Wed, 04/01/2026 - 9:45am

You can call me a curmudgeon for saying that rock and pop music today are dreadful compared to that of their years of apogee (yes, my teenage years!), but you’d have to call Rick Beato a curmudgeon as well. And he knows a ton about music, being a musician himself, a producer, a music analyst, and a teacher. So he surely has more musical cred than I. Nevertheless, we generally share opinions about music, in particular the view modern rock and pop is tedious, repetitive, and boring. And I’ll argue strenuously that it’s not just because I like the music of my youth, and other generations like the music of their youth. Nope, metrics like musical complexity, the frequency of autotuning, and so on support the decline of rock and pop.

In the ten-minute video below, Beato compares the Beatles with Taylor Swift, and you can guess who comes off worse. (The “kids” may disagree, but they also are largely ignorant of the Beatles.) I have to say that I’ve listened to a fair amount of Taylor Swift, trying arduously to find out what it is about her music that’s made her the world’s biggest pop sensation. It can’t be her tunes, which are unmemorable, so perhaps it’s her lyrics about the bad guys she’s been involved with—something that surely resonates with her (mostly) female fans.

In this video Beato reacts to a 2024 NYT article (archived here) that discussed whether Taylor Swift is bigger now than the Beatles were in the past. That article concludes that both were huge and, if you use the right metrics, Swift can be seen as even bigger than the Beatles:

The length of Swift’s career has allowed her into the Beatles’ vaunted ballpark by giving her the chance to evolve her sound, grow her loyal audience and take full advantage of technological advances.

Yet as wild as it is for the Beatles to have accomplished so much in so little time, Swift’s longevity might be considered equally impressive in pop music, which often overvalues the new and — especially among female artists — the young.

Swift is of course still active, so we can’t measure something that I consider important: will their music be listened to twenty years hence? And how will it be regarded several decades after Swift or the Beatles stopped making music? We’ll have to wait, of course, for the answers to those questions, and I’ll be underground.

However, in this video, Beato details his experiences with Swift, having attended a number of her concerts and having a deep acquaintance with her music, as he has with the Beatles. But Beato is concentrating on quality, not sales or chart position.  He notes that many of Taylor Swift’s melodies were written by a large number of people who change over time, compared to only three for the Beatles (Lennon, McCartney, and Harrison). And it shows in the lame melodies (Beato likes Swift’s lyrics better than “her” tunes.) Further, Swift’s instrumentation itself was largely produced and performed \ by people other than Swift—something that, says Beato, is simply “how pop music is made” these days.

Although one would think that the Beatles don’t need to be extolled by Beato, since he’s done it so many times before, but he does mention great melodies of Beatles songs like “Lady Madonna,” or “I am the Walrus.”  (I could mention a gazillion more.) In contrast to Swift, he argues, the Beatles did not repeat ideas, and “they came up with all those ideas themselves.” He winds up calling Swift a “content creator”, who picks the brains of other people when she wants to change her music.

Beato asks for comments on his opinion, and I welcome yours below. But I doubt I’ll change my opinion that rock and pop music peaked several decades ago, and has gone downhill ever since. Swift’s immense popularity only proves that.

I have never heard a Taylor Swift song that comes close to the quality of this Beatles classic, and it isn’t all that complex compared to their later work. George Martin’s interpolation at 1:42, however, is a piece of genius:

The song was recorded on 18 October 1965, and it was complete except for the instrumental bridge. At that time, Lennon had not decided what instrument to use, but he subsequently asked George Martin to play a piano solo, suggesting “something Baroque-sounding”. Martin wrote a Bach-influenced piece that he found he could not play at the song’s tempo. On 22 October, the solo was recorded with the tape running at half speed, so when played back at normal pace the piano was twice as fast and an octave higher, solving the performance challenge and also giving the solo a unique timbre, reminiscent of a harpsichord.

Categories: Science

The Supreme Court, free speech, and therapy: a big screwup by the Supremes

Wed, 04/01/2026 - 8:15am

Yesterday, by a rare vote of 8-1, the Supreme Court struck down Colorado’s ban on “conversion therapy” for minors (we’re talking about a ban on speech, not medical procedures).  Judge Ketanji Brown Jackson dissented, breaking from her two liberal colleagues.

The background: in 2019, Colorado passed a bill banning “conversion therapy for a minor” (HB19-1129), which you can see here.  it defined “conversion therapy” this way:

(5.5) (a) “CONVERSION THERAPY” MEANS ANY PRACTICE OR TREATMENT BY A LICENSED PHYSICIAN SPECIALIZING IN THE PRACTICE OF PSYCHIATRY THAT ATTEMPTS OR PURPORTS TO CHANGE AN INDIVIDUAL’S SEXUAL ORIENTATION OR GENDER IDENTITY, INCLUDING EFFORTS TO CHANGE BEHAVIORS OR GENDER EXPRESSIONS OR TO ELIMINATE OR REDUCE SEXUAL OR ROMANTIC ATTRACTION OR FEELINGS TOWARD INDIVIDUALS OF THE SAME SEX.

(b) “CONVERSION THERAPY” DOES NOT INCLUDE PRACTICES OR TREATMENTS THAT PROVIDE:

(I) ACCEPTANCE, SUPPORT, AND UNDERSTANDING FOR THE FACILITATION OF AN INDIVIDUAL’S COPING, SOCIAL SUPPORT, AND IDENTITY EXPLORATION AND DEVELOPMENT, INCLUDING SEXUAL ORIENTATION-NEUTRAL INTERVENTIONS TO PREVENT OR ADDRESS UNLAWFUL CONDUCT OR UNSAFE SEXUAL PRACTICES, AS LONG AS THE COUNSELING DOES NOT SEEK TO CHANGE SEXUAL ORIENTATION OR GENDER IDENTITY; OR

(II) ASSISTANCE TO A PERSON UNDERGOING GENDER TRANSITION.

This is aimed only at minors—people under 18.  Conversion therapy was not characterized as a criminal offense, but as a violation of professional discipline—a form of “unprofessional conduct” that could be punished by licensing boards, including suspension of licenses and fines.

Note that although we hear a lot about the law banning “affirmative therapy,” most of us see that as a kind of therapy that urges children who are gender dysphoric to alter their gender or their sex. But the law as written also bans “gay conversion therapy”: attempts, once in vogue when homosexuality was seen as a mental illness, to prevent people from being gay—to keep them “straight.” There are laws in 27 states and the District of Colombia, as shown in the map below from the Measurement Advancement Project, prohibiting this kind of therapy.

As the SCOTUS blog reports (as does the Supreme Court’s decision, linked below), the ban was challenged by a therapist who wanted to help her clients transition the way they wanted:

The Supreme Court on Tuesday sent a challenge to Colorado’s ban on “conversion therapy” – treatment intended to change a client’s sexual orientation or gender identity – for young people back to the lower courts for them to apply a new standard. By a vote of 8-1, the justices agreed with Kaley Chiles, the licensed counselor challenging the law, that the ban discriminates against her based on the views that she expresses in her talk therapy. A federal appeals court, Justice Neil Gorsuch wrote for the majority, should have applied a more stringent standard of review, known as strict scrutiny, to determine whether the law violates the First Amendment as applied to Chiles.

But the Supreme Court also strongly hinted that the ban would fail that test. In his 23-page opinion, Gorsuch stressed that in cases like Chiles’, Colorado’s ban “censors speech based on viewpoint.” Because the First Amendment “reflects … a judgment that every American possesses an inalienable right to think and speak freely, and a faith in the free marketplace of ideas as the best means for discovering truth,” Gorsuch continued, “any law that suppresses speech based on viewpoint represents an ‘egregious’ assault on both of those commitments.”

Justice Ketanji Brown Jackson was the lone dissenter. She argued that the majority’s opinion “could be ushering in an era of unprofessional and unsafe medical care administered by effectively unsupervised healthcare providers.”

Chiles went to federal court in Colorado to challenge the constitutionality of the 2019 law and block Colorado from enforcing it against her. She contended that she did not attempt to “convert” her clients. Instead, she said, she merely tried to help them “with their stated desires and objectives in counseling, which sometimes includes clients seeking to reduce or eliminate unwanted sexual attractions, change sexual behaviors, or grow in the experience of harmony with one’s physical body.”

A divided panel of the U.S. Court of Appeals for the 10th Circuit allowed the state to continue to enforce the law. The majority concluded that the conversion therapy ban simply regulated conduct – a licensed mental health professional’s treatment of a client – that also happened to involve speech. Therefore, the court of appeals concluded, it would review the ban using the least stringent test for constitutional challenges, known as the “rational basis” test – a relatively low bar, the court of appeals said, that the ban passed.

Chiles came to the Supreme Court in 2024, asking the justices to weigh in. On Tuesday, they reversed the 10th Circuit’s ruling and sent the case back to the lower courts for another look.

Curiously, Chiles apparently wasn’t trying to force her clients to adopt one course of action over another, but to achieve the course of action they wanted:

[Chiles] contended that she did not attempt to “convert” her clients. Instead, she said, she merely tried to help them “with their stated desires and objectives in counseling, which sometimes includes clients seeking to reduce or eliminate unwanted sexual attractions, change sexual behaviors, or grow in the experience of harmony with one’s physical body.”

The issue here is that it’s still “affirmative” in that Chiles went along with what their (minor) patients wanted rather than examining what they wanted.

The grounds for the decision were narrow: banning conversion therapy violated the First Amendment’s provision for freedom of speech (my bold below):

Gorsuch characterized the question before the justices as “a narrow one”: whether Colorado’s ban on conversion therapy violates the First Amendment as applied to the talk therapy that Chiles provides, and in particular whether the 10th Circuit was correct in applying “rational basis review” to the ban.

The Supreme Court, Gorsuch observed, “has long held that laws regulating speech based on its subject matter or ‘communicative content’ are ‘presumptively unconstitutional’” and therefore trigger strict scrutiny, which requires the government to show that a restriction on speech is narrowly tailored to serve a compelling government interest. “Under that test,” Gorsuch added, “it is ‘“rare that a regulation . . . will ever be permissible.”’”

The court has also acknowledged, Gorsuch continued, “the even greater dangers associated with regulations that discriminate based on the speaker’s point of view. When the government seeks not just to restrict speech based on its subject matter, but also seeks to dictate what particular ‘opinion or perspective’ individuals may express on that subject, ‘the violation of the First Amendment is all the more blatant,’” Gorsuch stressed. “’Viewpoint discrimination,’” Gorsuch said, “represents ‘an egregious form’ of content regulation, and governments in this country must nearly always ‘abstain’ from it.”

“Applying these principles,” Gorsuch continued, “we conclude that the courts below failed to apply sufficiently rigorous First Amendment scrutiny in this case.” First and foremost, Gorsuch wrote, although “the First Amendment protects many and varied forms of expression, the spoken word is perhaps the quintessential form of protected speech. And that is exactly the kind of expression in which Ms. Chiles seeks to engage.”

. . . The majority rejected the state’s contention that the conversion therapy ban targets conduct or medical treatments, rather than speech, and therefore should be subject to a more deferential standard of review. Although the ban “may address conduct—such as aversive physical interventions” – Gorsuch wrote, Chiles “seeks to engage only in speech, and as applied to her the law regulates what she may say,” as well as “what views she may and may not express.” “Colorado,” Gorsuch concluded, “does not regulate speech incident to conduct; it regulates ‘speech as speech.’”

Note as well that Colorado’s ban wasn’t fully negated, nor were similar bans throughout the U.S.. Rather, the case was sent back to the lower courts for reevaluation on these grounds (from Grok, with sources); the applicable appellate courts must:

  • Apply strict scrutiny (the most demanding level of First Amendment review) to the law as it applies to Chiles’s talk therapy. Under this standard, Colorado bears the burden of proving that the restriction on Chiles’s speech is narrowly tailored to serve compelling state interests.
  • Reconsider the case in light of the Court’s determination that the law engages in viewpoint discrimination (banning one set of views on sexual orientation/gender identity while expressly permitting the opposing “affirmative” views, such as acceptance, support, identity exploration, or assistance with gender transition).

The Court’s opinion, concurrences, and Justice Jackson’s dissent can be found by clicking on the screenshot below:

I’ll be brief here (I hope): the Court screwed up big time here, failing to recognize, as Justice Jackson said in her 35-page dissent (which she read from the bench in toto), that in the case of therapy, medical or psychological, talk is more than just speech, it’s treatment. From her dissent:

No one directly disputes that Colorado has the power to regulate the medical treatments that state-licensed professionals provide to patients. Nor is it asserted that, when doing so, a State always runs afoul of the Constitution. So, in my view, it cannot also be the case that Colorado’s decision to restrict a dangerous therapy modality that, incidentally, involves provider speech is presumptively unconstitutional. In concluding otherwise, the Court’s opinion misreads our precedents, is unprincipled and unworkable, and will eventually prove untenable for those who rely upon the long-recognized responsibility of States to regulate the medical profession for the protection of public health.

Remember that medical therapy uses speech as well. Any doctor who simply told a patient to go home and drink vinegar with herbs to treat their cancer would be guilty of professional misconduct. Note that here the doctor doesn’t do anything, but could still be punished for malpractice.  The doctor must adhere to reasonable and accepted forms of treatment, and that includes treatments suggested only through speech.

Brown notes that conversion therapy is “dangerous,” and nearly everyone would agree with that vis-à-vis gay conversion therapy. It’s long been recognized by therapists and their organizations that trying to force someone out of becoming gay, instead of simply talking over the issue, is acting unethically and, insofar as this causes stress and may change someone’s life in a negative way, i.e. causing harm.

We’re beginning to recognize that the same holds for “affirmative therapy” as well.  If it works, affirmative therapy puts young people on a one-way treadmill leading to to puberty blockers, then to adult hormones, and perhaps to surgery.  Britain’s Cass Review, as well as studies in Scandinavian countries, have already recognized that “affirmative therapy” that leads to blockers and hormones is of unproven efficacy and could be dangerous over the long term. Insofar as talk therapy promotes these actions, then, it too is dangerous—much like telling someone they should take vinegar for cancer. It seems only rational that when a minor has a psychological problem around gender or sexuality, the therapist should be giving objective treatment—helping the patient sort out their feelings—and not imposing some outside ideology on the therapy. For outside ideology is exactly what is polluting “conversion therapy”: you shouldn’t be gay on the one hand, and on the other your gender dysphoria should be roundly affirmed (e.g., you feel like a girl inhabiting a boy’s body, and thus should go that route) rather than examined.

Perhaps when this case is remanded to lower courts, they will clarify these issues, notably that talk therapy is equivalent to action.  But surely the Supreme Court could have said that, and, as far as I can see, they messed up big time. I’m especially disappointed that the other two liberal justices, Kagan and Sotomayor, deemed the Colorado law a case of “viewpoint discrimination.” It may have been that way for legislators, but the law as written doesn’t deal with motivations. It is trying to prevent harm to minors.

I disagree strongly with the Court’s decision, while at the same time remembering that the law it banned is aimed at minors, not adults.

Categories: Science

Jesus ‘n’ Mo ‘n’ question-begging

Wed, 04/01/2026 - 6:30am

Today’s Jesus and Mo strip, called “woe,” literally begs the question of whether he was the True Prophet.

Categories: Science

I may have been wrong about Bill Maher and UFOs

Tue, 03/31/2026 - 10:45am
Because many readers have been saying I was wrong in thinking that Bill Maher was jesting when he did a recent “New Rules” piece on UFOs, in which he seemed to be joshing when he said that he’d changed his mind and now believes in them, I queried the pretty reliable AI bot Grok to find out. My question is in bold below, and Grok’s answer is indented.  The good thing about Grok is that it gives links (see sources below) so you can check their claims.

 

Does Bill Maher believe in extraterrestrial beings visiting Earth in UFOs?

Thought for 20seconds

Yes, Bill Maher currently believes that extraterrestrial beings (or non-human intelligence) are visiting or observing Earth via UFOs/UAPs (unidentified aerial phenomena).

foxnews.com

In a “New Rule” monologue on the March 27/28, 2026 episode of Real Time with Bill Maher (titled “The Disclosure Moment”), he stated:

“Given the increasing number in recent years of sightings by serious military personnel of unknown aircraft operating outside our apparent abilities, if at this point you don’t believe aliens are here and observing us, maybe you’re the conspiracy theorist. … They’re here, they came in a sphere, get used to it.”

youtube.com

He added that his view has evolved: “My opinion changes when the information changes.” Maher contrasted this with older abduction stories (which he dismissed as anecdotal from “rural people”), noting that current reports come from credible military pilots, intelligence officials, and bipartisan figures describing objects that defy known physics—accelerating instantly, moving between air and water seamlessly, and “playing peek-a-boo” with the military.

foxnews.com

This stance appears consistently in his recent appearances. For example:

  • On his Club Random podcast with filmmaker Dan Farah (director of the UFO documentary Age of Disclosure, which Maher has promoted), he discussed government cover-ups of crashed UAPs, recovered non-human bodies, reverse-engineering efforts, and why disclosure could spark a global tech race. youtube.com
  • He has raised the topic multiple times on Real Time in the past several months, treating recent UAP reports from “serious people” (military, politicians, officials with security clearances) as compelling evidence rather than fringe claims. realclearscience.com

Critics (including some skeptics and science writers) have called this a shift to “full-blown believer” territory and questioned the evidence, but the question is about Maher’s own position—not whether it’s correct. He has long been a vocal skeptic of pseudoscience and religion, so this represents a notable change driven by what he sees as accumulating high-credibility reports.

realclearscience.com

In short, as of early 2026, Maher explicitly accepts that extraterrestrial visitors are here and actively interacting with (or at least observing) us through these phenomena. He even jokes directly to the aliens in his monologue, asking them not to wipe us out while pleading for help with nuclear weapons and fossil fuels.

So, I may well have been wrong when I said Maher couldn’t possibly accept the existing “evidence” for aliens and UFOs.  He actually appears to. I’d like to see somebody ask him the question straight out, and insist that Maher give a straight answer. If he said he was a believer, I have to say that my respect for him would plummet, for I see the evidence as thin. And where would those aliens have come from? Why hasn’t the nosey news media managed to sniff out the most important story in the history of humanity?

I don’t have any problem admitting I was wrong—I just want Maher to give a straight answer to a straight question. The Grok-ish answer above is, in my view, not dispositive.

Categories: Science

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