Elephants’ wings

Once upon a time, four blind men were walking in the forest, and they bumped into an elephant.

Moe was in front, and found himself holding the trunk. “It has a tentacle,” he said. “I think we have found a giant squid!”

Larry bumped into the side of the elephant. “It’s a wall,” he said, “A big, bristly wall.”

Curly, at the back, touched the tail. “It’s nothing to worry about, nothing but a piece of rope dangling in the trail.”

Eagletosh saw the interruption as an opportunity to sit in the shade beneath a tree and relax. “It is my considered opinion,” he said, “that whatever it is has feathers. Beautiful iridescent feathers of many hues.”

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Embryonic similarities in the structure of vertebrate brains

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I’ve been doing it wrong. I was looking over creationist responses to my arguments that Haeckel’s embryos are being misused by the ID cretins, and I realized something: they don’t give a damn about Haeckel. They don’t know a thing about the history of embryology. They are utterly ignorant of modern developmental biology. Let me reduce it down for you, showing you the logic of science and creationism in the order they developed.

Here’s how the scientific and creationist thought about the embryological evidence evolves:

i-0fbb95c437feb7bb89110acb6f8e6326-brcorner.gifScientific thinking

An observation: vertebrate embryos show striking resemblances to one another.

An explanation: the similarities are a consequence of shared ancestry.

Ongoing confirmation: Examine more embryos and look more deeply at the molecules involved.

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Creationist thinking

A premise: all life was created by a designer.

An implication: vertebrate embryos do not share a common ancestor.

A conclusion: therefore, vertebrate embryos do not show striking resemblances to one another.



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