I wasn’t planning to write any posts at all that dealt specifically with Creationism head-on; there didn’t seem to be much point. That was until I ended up in a discussion on a blog, one which I had the sense to keep brief – these kinds of discussions can get very entrenched and end up nowhere fast.
There are some odd things about Creationism and “Intelligent Design” (ID). The most notable is the obsession with evolution and Charles Darwin. It’s useful at this point to remember what evolution is about: it simply says that through natural selection, species either adapt to a changing environment – or die out. The same process – natural selection – gives rise to new species, when a population is separated and the number of adaptations begin increases to a certain point. That’s a rough outline – there is a whole debate as to what actually constitutes a ’species’.
Adapatations are brought about by changes – mutations – in DNA: something that Darwin had no knowledge about, although he figured that there must be something that was passed onto the next generation.
It’s odd that Creationists (including the ID people) should spend much time on this theory – not only is it so well established in the literature that it would be akin to challenging the concept of gravity, but it’s the way in which they try to select examples by way of counter example.
The arguments tend to be one of the following: given biological example is so complicated that it must be designed/created; and then conclude that it indeed has been designed/created (‘irreducible complexity’ in the jargon). The other tact is to deny that random mutation within DNA is possible, or, if it is, it is very rare and only produces negatives consequences.
This latter example was one recently presented to me elsewhere; the first time I heard it, oddly enough, was by Islamic Creationists from Turkey. So even if I were to be convinced by this argument, I’m unsure with the Creator is Allah or Jehovah! I joke, but the point is serious: what evidence can be brought to bear to prove one way or another, given that their respective holy texts cancel each other out?
Both tactics essentially try to undermine evolution as a theory. It doesn’t work because it doesn’t disporve the theory; at best, if there were no mutations, as the Creationists claim, and if there were irreducible complexity, it would suggest that the theory of evolution doesn’t apply in those given particular cases. Mutations, for example, occur in bacteria (hence resistance to anti-biotics) and so on.
What would disprove the theory of evolution would be a ‘counter-factual’. Irreducible complexity purports to be such a counter-factual, but evolution says precisely that which is denied by the Creationist: however incredible it may seem, and whatever teh appearnace of design, that particular biological phenomena did come about by evolution, and not by divine intervention. Simply claiming something is designed based on appearance is far from proving that it has been designed.
A true counter-factual would be something that was demonstrably against something that evolution predicts. Evolution predicts that complex organisms arose from simple organisms. By definition, if you found a complex organism in a geological era when there should only be simple ones (however old you think it is and whatever the geologists say) would be the kind of thing. So, if you found a modern human burial in the Jurassic, or JBS Haldane’s rabbit in the Pre-Cambrian period; that would be perfect.
The logic of the arguments are often faulty. For example, having established in their minds that evolution doesn’t work, they conclude that there is 1) the appearance of design which means that 2) there is a designer. Evolution says the opposite, that the appearance of design doesn’t imply a designer, so you would need to supply evidence to prove that the appearance of design really does imply a designer. The next fault is that, for some reason, it only implies a single designer – again, at the expense of evidence. Why not a team of designers, given that Boeing 747s (complicated pieces of machinary) use hundreds of designers? We are not told why (without resorting to the holy text of choice).
Finally, saying that the variety of life on Earth was because of a Designer, or God, is not an answer but raises two other questions: how, and what created this Designer/God? These cannot be answered without recourse to holy text; the text in question may be right, but given that the experience of God is a personal, subjective experience rather than an out-there, objective, experience, it really does take us away from the science that we were trying to do answer the kind of scientific questions that evolution answers.
Whatever else may be said about Creationism and Intelligent Design, science it most certainly is not.
Further reading: Steve Poole on ‘Intelligent Design’