Bryan Fischer and the dogmatic incantations

I’m getting too old for this. The idiots keep making the same arguments, over and over again, and they just get dumber with every iteration. Bryan Fischer makes me want to stick an icepick in my brain just to stop the stupidity coming out of his mouth.

His latest article is Defeating Darwin in four steps…and I read the title and instantly predicted what his four objections would be before I even looked at the first sentence — I’d apply for Randi’s million dollar challenge, except reading the mind of a droning cretin isn’t much of a challenge.

You really need to listen to Fischer’s awful radio show, just for the schlocky thrill of his sing-songy chant of “First Law, Second Law, Fossils, Genes”. It’s a high quality, potent emetic.

Here are his four magic arguments:

  1. First Law of Thermodynamics. This law (note: not a theory but a scientific law) teaches us that matter and energy can neither be created nor destroyed. In other words, an honest scientist will tell you that there is nothing in the observable universe that can explain either the origin of energy or matter. By logical extension, then, matter and energy had to come into being by some force outside the universe.

    What this means, then, is that science simply has no explanation for the most basic question that could possibly be asked: why is there something rather than nothing?

    Actually, I didn’t guess this one exactly right — I thought he’d say something about abiogenesis, that we don’t know how life started. Unfortunately, Fischer was even more idiotic than I thought he’d be: the origin of the universe is a physics problem, and is not a matter explained at all by biological evolution, so this is completely irrelevant.

    This is a common creationist claim, though, that the Big Bang violates the first law of thermodynamics. These gomers don’t understand thermodynamics so it’s silly for them to rely on it. Ask a physicist; the Big Bang doesn’t violate thermodynamics.

    This negative gravitational potential energy exactly cancels out the positive energy of the universe. As Stephen Hawking says in his book A Brief History of Time (quoted by Victor Stenger, Has Science Found God?, p. 148): “In the case of a universe that is approximately uniform in space, one can show that this negative gravitational energy exactly cancels the positive energy represented by the matter. So the total energy of the universe is zero.” In other words, it is not the case that something came out of nothing. It is that we have always had zero energy.

  2. Second Law of Thermodynamics. This law (note: not a theory but a law) teaches us that in every chemical or heat reaction, there is a loss of energy that never again is available for another heat reaction. This is why things break down if left to themselves, and why scientists tell us that the universe is headed toward a heat death.

    This law teaches us, then, that the universe is headed toward increasing randomness and decay.

    But what does the theory of evolution teach us? The exact opposite, that the universe is headed toward increasing complexity and order. You put up a scientific theory against my scientific law, I’m going to settle for the law every time, thank you very much.

    I knew this one was coming. Again, creationists don’t understand thermodynamics at all, and this is a beautiful example. Nothing violates the second law. Every gain in complexity in biology is matched by an even greater increase in entropy. I was once a tiny single cell, and I have increased in complexity and bulk over the years by chowing down on a mountain of high-energy food and turning it into a mountain of low-energy poop. It’s the same story with the bigger scale of evolution: it’s ultimately been driven by immense masses of hydrogen fusing in the heart of our star. Far more energy was burned by the sun than was harvested and used in all the history of life, so there is no net gain in the energy of the whole system.

  3. Fossils. Realize that the fossil record is the only tangible, physical evidence for the theory of evolution that exists. The fossil record is it. There is absolutely nothing else Darwinians have they can show you.

    As Yale University’s Carl Dunbar says, “Fossils provide the only historical, documentary evidence that life has evolved from simpler to more and more complex forms.”

    But if Darwin’s theory is correct, that increasingly complex life forms developed in tiny little incremental and transitional steps, then the fossil record should by littered with an enormous number of transitional fossils.

    Another predictable and stupid claim. We’ve got lots of transitional fossils. We look in the fossil record, and find entire ecosystems that no longer exist and have changed in radical ways. This is Fischer just sticking his fingers in his ears and shouting “la la la la”.

    The quote from Carl Dunbar is revealing. If you’re like me, you’re asking “who the heck is Carl Dunbar, and why should I care?” This one is a double-whammy against the creationists, though: Carl Dunbar was born in 1891, so once again they’re desperately scrambling to find some authority, any authority, to back up their claims. The other problem for the creationists, though, is the quote itself. Read it. Does this actually say there’s a problem with the fossil record? No, it does not. Dunbar was a well-known invertebrate paleontologist 50 years ago, who published many papers illustrating the pattern of transitions in the stratigraphic record.

    He’s probably be very surprised to hear that creationists now cite his work vaguely and with no comprehension as evidence against evolution. I guarantee you, too, that Fischer knows nothing about Dunbar’s work, and only cites him because he found other creationist sites that quote-mined him.

  4. Genes. The only mechanism — don’t miss this — the only mechanism evolutionists have to explain the development of increasingly complex life forms is genetic mutation. Mutations alter DNA, and these alterations can be passed on to descendants.

    The problem: naturally occurring genetic mutations are invariably harmful if not fatal to the organism. Rather than improve an organism’s capacity to survive, they invariably weaken it. That’s why the phrase we most often use to refer to genetic mutations is “birth defects.”

    Bryan Fischer is completely wrong here: he’s stating as a fact that mutations are invariably deleterious, and this is simply not true. Most are neutral. Some are advantageous, and all it takes is one counterexample to show that his absolutist statements are wrong. I’d say he’s lying, but I know what a lot of people would say: “he’s not literally lying, he’s just ignorant”. But this is something we need a better word for: he’s stating as a certainty a false ‘fact’, acting as an authority in a field he actually knows nothing about, and is intentionally promoting a counterfactual to advance an ideology. He’s a disinformation agent, sowing propaganda: it’s worse than lying.

That’s enough inanity. I’m done. I really hope, though, that someday someone comes up to me chanting “First Law, Second Law, Fossils, Genes” just like Bryan Fischer so I can kick their dumb ass.

(Also on FtB)

The epigenetics miracle?

Jerry Coyne is mildly incensed — once again, there’s a lot of recent hype about epigenetics, and he doesn’t believe it’s at all revolutionary. Well, I’ve written about epigenetics before, I think it’s an extremely important subject central to our understanding of development, and…I agree with him completely. It’s important, we ought to spend more time discussing it in our classes, but it’s all about the process of gene expression, not about radically changing our concepts of evolution. I like to argue that what multigenerational epigenetic effects do is blur out or modulate the effects of genetic change over time, and it might mask out or highlight allelic variation, but ultimately, it’s all about the underlying genetic differences.

Coyne mentions one journalist who claims that new discoveries in epigenetics would “make Darwin swoon,” which is a bizarre standard. Darwin knew next-to-nothing about genetics — he had his own weird version of Lamarckian inheritance — and wasn’t even equipped to imagine molecular biology, so yes, just about anything in this field would dazzle him. My freshman introductory biology course would blow Charles Darwin away — he’d have to struggle to keep up with the products of American public education.

(Also on FtB)

Magnificent momma

This is one beautiful plesiosaur, Polycotylus latippinus.

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(A) Photograph and (B) interpretive drawing of LACM 129639, as mounted. Adult elements are light brown, embryonic material is dark brown, and reconstructed bones are white. lc indicates left coracoid; lf, left femur; lh, left humerus; li, left ischium; lp, left pubis; rc, right coracoid; rf, right femur; rh, right humerus; ri, right ischium; and rp, right pubis.

The unique aspect of this specimen is that it’s the only pregnant plesiosaur found; the fore and hind limbs bracket a jumble of bones from a juvenile or embryonic Polycotylus. It’s thought to actually be a fetal plesiosaur, rather than an overstuffed cannibal plesiosaur, because 1) the smaller skeleton is still partially articulated, and it’s large enough that it is unlikely it could have been swallowed whole, 2) the two sets are of the same distinctive species, 3) the juvenile is incompletely ossified and doesn’t resemble a post-partum animal, 4) the bones aren’t chewed, etched by acids, or accompanied by gastroliths. I think we can now confidently say that plesiosaurs were viviparous, which is what everyone expected.

There are other surprising details. The fetus is huge relative to the parent, and there’s only one — so plesiosaurs had small brood sizes and invested heavily in their offspring.

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Reconstructions of female P. latippinus and newborn young. Gastralia were present in both animals but have been omitted for clarity.

The authors speculate beyond this a bit, but it’s all reasonable speculation. That degree of parental investment in fetal development makes it likely that there would have been extended maternal care after birth, and rather more tenuously, that they may also have lived in larger social groups. The authors suggest that their lifestyle may have resembled that of modern social marine mammals — picture a pod of dolphins, only long-necked and lizardy.


O’Keefe FR, Chiappe LM (2011) Viviparity and K-Selected Life History in a Mesozoic Marine Plesiosaur (Reptilia, Sauropterygia) Science 333 (6044): 870-873.

(Also on FtB)

Planet of the Apes

Isn’t it obvious that the story of Planet of the Apes is about apes from one planet dominated by apes finding themselves on a planet dominated by apes of a slightly different species?

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Also, this comic bugs me a little bit: I’m flying off to give a talk in which I argue that the hallmark of human evolution isn’t brutality and conquest, but cooperation.

(Also on FtB)

Vox Day and the status of Xiaotingia

I told you all the batty creationists were crawling out of the woodwork to crow over Xiaotingia‘s redefinition of Archaeopteryx‘s status as a victory for their ideology, when it really isn’t. Now another has joined the fray: Vox Day, creationist and right-wing lunatic. He makes a lot of crazy, ignorant claims in this short passage that I’ll answer one by one.

Precisely when has any evolutionist reconsidered either a) the basic hypothesis that species evolve into different species through natural selection1 or b) the corollary and requisite hypothesis that life evolved from non-life2, as a result of the falsity of one, ten, or even a hundred predictions that relied upon one or both of them? If it weren’t for DNA, which was not discovered or developed with any assistance from evolutionary theory3, evolutionary biology would already be openly recognized by every intelligent, rational, science-literate individual as being about as useful as phrenology and astrology.4

Darwinian biologists are very much like Keynesian economists. It doesn’t matter how many times their predictions fail5. It doesn’t matter how often their models are proven to be wildly wrong6. It doesn’t matter how many times they have been wrong in the past even with the benefit of margins of error consisting of millions of years7. They continue to insist that their position is based on evidence even when the evidence demonstrates precisely the opposite of what they have been claiming8.

First, the details:

1Of course biologists have considered alternate mechanisms! Coyne argues for selection as a mechanism of speciation (by pleiotropic side effects of genes that are selected for other functions), and Futuyma argues for speciation by drift.

2Similarly, mechanisms of abiogenesis have been proposed that suggest selection, but also chance or as a necessary outcome of the physico-chemical properties.

3The structure of DNA was analyzed by its chemistry, not it’s evolutionary history, obviously, but as this paragraph even concedes, the consequences of DNA biochemistry were profoundly important in their effects on evolution.

4Nope. Structure of DNA was determined in 1953; the neo-Darwinian synthesis occurred in the 1930s-1940s with the integration of genetics into evolutionary biology. It was genetics (especially population genetics) that established evolution as the only reasonable explanation for the history of life on earth.

5The precise taxonomic status of Archaeopteryx was not a specific prediction of evolutionary theory. Finding more data in the form of more fossils of feathered dinosaurs strengthens the idea of avian descent from dinosaurs.

6If you examine the family tree of Archaeopteryx and Xiaotingia, what you should see is that the taxonomic re-evaluation of Archeopteryx merely moves it from the Paraves branch to the nearby Deinonychosaurian branch…hardly a “wildly wrong” model.

7Vox Day has not described anything yet which shows evolution being wrong. Adjusting the precise timing of evolutionary events by millions of years is a reasonable response to new data which does not falsify the underlying hypotheses of relatedness.

8Again, this discovery does not demonstrate the opposite of what evolutionary biologists have been claiming, and actually makes for a better fit with other data about ancient bird ancestors; moving Archaeopteryx from a first cousin to a second cousin of the ancestor of modern birds isn’t a radical idea that invalidates evolutionary biology.

The big picture is even more damning for Vox Day. Of course we have huge volumes of information supporting the theory of evolution, that suite of mechanisms and principles that describe the broad course of evolutionary history, including common descent and descent with modification. And also there are a multitude of details that aren’t completely known — we have millions of species on this planet, and only a fraction have been studied in depth. The theory of evolution does not hang on the exact lineage of any two species out of those millions…it hangs on the fact that there is a lineage.

Vox Day is quite the poseur — he pretends to know better than real scientists, when he can’t even tell the difference between hypothesis and data.

Xiaotingia zhengi

A lovely new dinosaur fossil from China is described in Nature today: it’s named Xiaotingia zhengi, and it was a small chicken-sized, feathered, Archaeopteryx-like beast that lived about 155 million years ago. It shares some features with Archaeopteryx, and also with some other feathered dinosaurs.

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a, b, Photograph (a) and line drawing (b). Integumentary structures in b are coloured grey. cav, caudal vertebra; cv, cervical vertebra; dv, dorsal vertebra; fu, furcula; lc, left coracoid; lfe, left femur; lh, left humerus; li, left ilium; lis, left ischium; lm, left manus; lp, left pes; lpu, left pubis; lr, left radius; ls, left scapula; lu, left ulna; md, mandible; rfe, right femur; rfi, right fibula; rh, right humerus; ri, right ilium; rm, right manus; rr, right radius; rt, right tibiotarsus; ru, right ulna; sk, skull; ss, synsacrum.

Now here’s why this particular fossil has some paleontologists in a dither. Systematics uses a set of objective, computer-based tools to objectively build phylogenetic trees: you plug a set of character parameters for a set of organisms into it, and it analyzes them and determines the most likely or most parsimonious tree to describe their relationships. Plugging in data from modern birds, Archaeopteryx, and dromeosaurs, for instance, generates trees in which Archaeopteryx clusters with the birds, and not the dromeosaurs. Archaeopteryx was not a direct ancestor of modern birds, but was thought to be related to the basal avians — so it was a kind of close cousin.

When Xiaotingia‘s data is tossed into the calculation, though, the results change. Xiaotingia doesn’t cluster so tightly with birds; it’s a more distant relative. However, Archaeopteryx shares enough significant features with Xiaotingia that they now cluster together, pulling Archaeopteryx out of the basal Aves and into a new classification. It says that Archaeopteryx is now a kind of second cousin, a little less closely related to the birds than previously thought.

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Archaeopteryx has historically been regarded as the most basal bird (avialan), but the discovery of the closely related Xiaotingia led Xu et al.1 to pull these archaeopterygids out of avialans (birds) and into deinonychosaurs along with dromaeosaurids and troodontids. This new grouping better accounts for the evolution of feeding strategies among bird-like dinosaurs. Previous research suggested that herbivory was common among this group, as reflected in the tall, boxy skulls of oviraptorosaurs and basal avialans such as Epidexipteryx. The triangular, sharp-toothed skull of Archaeopteryx was incongruous among basal avialans, but fits better among the carnivorous dromaeosaurids and troodontids.

I have to say that I think it’s extremely cool that we have a new fossil from down around the roots of the bird family tree, and it does sharpen our knowledge of what was going on down there in the middle and late Jurassic. There was a whole assortment of delicate-boned, feathered, bipedal dinosaurs that were flourishing and diversifying in that window of time, and we’ve now got enough data that we can distinguish details in the family tree, which is absolutely fabulous.

However, a lot of the fuss over the specimen as somehow radically changing the importance of Archaeopteryx is a bit overblown. The relative status of Archaeopteryx and Xiaotingia is a bit of taxonomic detail — important details in working out the specific history of life — but it’s the equivalent of deciding that a fossil belongs in one pigeonhole rather than the pigeonhole next to it. Its shift in status means that there’s a bigger gap in the early history of the true birds than we thought, and it also means that there was a greater diversity of bird-like forms than we expected in the Jurassic. One other suggestion is that removing the carnivorous Archaeopteryx from the base of the bird family tree opens up the possibility that modern birds might have descended from the vegetarian side of the family — if the last common ancestor of birds was an herbivore, that has interesting implications for the paths evolution took.

But don’t worry, Archaeopteryx still represents a beautiful example of a transitional form. This new fossil is just another transitional form discovered. Creationists cannot take any consolation from it: Archaeopteryx isn’t suddenly gone, it’s become a part of a richer picture of bird evolution.


Xu X,
You H,
Du K
Han F (2011) An Archaeopteryx-like theropod from China and the origin of Avialae. Nature 475, 465-470.

A Skeptical Look at Aliens

OK, I’m feeling guilty: I’m off at The Amaz!ng Meeting enjoying myself, and totally neglecting the blog readers who aren’t lucky enough to be here too. And since I’ve been getting lots of requests to put the full content of my talk online, I figured…yeah, sure, I can do that. So here you go, all of the slides and what I said about them, mostly, below the fold. Criticize and argue and do your usual.

[Read more…]

The teeny-tiny bit of my TAM talk I had to cut short

I just gave my talk at TAM on likely paths of alien evolution (my conclusion: humanoids are extraordinarily unlikely), and there was one awkward bit I have to fix.

Here’s the problem: these were short talks, only a half hour long, so I designed it so there were some optional bits I’d only get to if time allowed, and I also had a couple of places where I could naturally bring it to a close if I ran over time. I was not able to show the last two slides I’d prepared, which was OK, I was ready for that. However, when we were setting up, the technician accidentally flashed the very last slide to the audience, which is a weird image, and it had to be left unexplained…so now I’ll explain it here on the blog.

Here it is, PZ’s TAM talk: the Lost Slides. This was to go right after I’d summed up the main reasons why we ought to expect great surprises in any alien morphology.


There’s one more brief and somewhat tangential point I have to make, because it’s weird and keeps coming up. I call it the Kirk effect: to boldly go and explore strange new worlds, and to hump all the women on them. This is not going to happen.

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This is the most recent outrageous example of this, from the space fantasy movie Avatar. James Cameron consciously chose (for understandable dramatic and profit-making reasons) to completely ignore what science said and shape his aliens to fit human expectations. And that meant making them sexy.

This is more than just sticking large lumps of adipose tissue on the female’s chest. It’s deep and subtle changes to the shape of the face, the eyes, the whole of the body — cues that we all unconsciously recognize. You don’t even need to see a person face-on to recognize sex. All you heterosexual men and lesbians, you know this: sight of the nape of the neck, the curve of waist to hip, all those are enough to make your heart go pitta-pat. And all you heterosexual women and gay men: broad shoulders, narrow hips, muscular buns…they can do it for you, right?

Let me show you. I know this is a family audience, so if you’re shy about female nudity or assertive sexual displays, I’m going to show you a bit of porn to make my point. So if you’re a little prudish, put your hands over your kids eyes or your own, because this may be an arousing image…

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