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But aren't you cheating to compare evolution to physics? Evolution is this gigantic, complicated tapestry of interwoven bits of explanatory power. But this big tapestry of evolution is filled with holes. It still hangs together, of course, but it does have holes. For example, evolution requires the invocation of common ancestors that we don't have any fossil record for; we don't really know anything about them, other than indirect dna inferences. A layperson is understandably skeptical when they are told that there's this tree of life going back to a common ancestor and all these life-forms are on the tree but we have no direct evidence for most of them and we have to infer them hypothetically. Doesn't it bother you that there are so many missing pieces in the puzzle?
Should people doubt the existence of electrons because they've never seen one? A lot of what we know to be true about physics is also inferred. I know it bothers people who are not really convinced yet about the consistency of evolutionary theory, but the much-emphasized gaps do not represent any real threat to the overall framework. And is the absence of a fossil representation of a specific organism all that troubling when you realize that fossilization is extremely unlikely to have happened?
Based on the DNA sequences of many mammals, we can now predict the genome sequence of the common mammalian ancestor. And it's breathtaking that you can actually look now at the dna sequence, which is a fossil record of its own, of an organism that is long since gone, but that we and all other mammals are descended from.
Evolution may seem from the outside to have a lot of complexities, and certainly there are lots of details we haven't worked out—and for anybody to say there are no arguments would be a total mistake. But nearly all scientists agree upon descent from a common ancestor, gradual change over a long period of time, and natural selection operating to produce the diversity of living species. There is no question that those are correct. Evolution is not a theory that is going to be discarded next week or next year or a hundred thousand years from now. It is true.
There is a remarkable claim being made today by anti-evolutionists that runs exactly counter to this. This is the claim that evolution is based on a big deception, that there isn't any solid basis at all for the theory, and that scientists are gradually abandoning evolution. Are there evolutionists jumping ship?
I haven't met any of these people. And I think I would hear about it, if it were true, as I have identified myself as a believer interested in studying biological evolution. No, I think those claims are completely without evidence.
Stating this is a convenient way to float the idea that evolution is a conspiracy that is about to be exposed. That's the idea behind the movie Expelled, which tries to make that same case—that there is a conspiracy to squash the truth. That viewpoint totally misunderstands the nature of science. Anybody who has lived within the scientific community would immediately—regardless of their worldview—rebel against the idea that science would be able to sustain such a conspiracy. Scientists are all about upsetting and overturning things. And if you're the one who's discovered how to overturn evolution, you're going to win the Nobel Prize!
The position that people on the outside of science—like the creationists and the people in the id camp—have adopted, that such a conspiracy could actually exist for more than thirty seconds, completely flies in the face of the realities of the sociology of the field of science. It's an insult.
What do you think of this project that the Discovery Institute has launched, with a laboratory where they want to do genuine scientific research, with their own in-house Intelligent Design scientists?
It is hard for me to imagine what they will do. id doesn't actually propose any falsifiable hypotheses. Science by its very nature ought to be unfettered by any particular perspective on what the right answers are supposed to be.
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