[Thatcherite]

How would you falsify creation theory, ID theory or evolution?

I am not aware of any falsification test for ID.

A DNA retrovirus shared by humans and gorillas but not chimps would neatly falsify the theory of evolution. (one of many, many, many possible falsifications that ToE has survived over the last 150 years, it wasn't so long ago that the creationists were predicting that the molecular evidence from genomes *would* falsify ToE when it came in. How wrong they were; it has vindicated ToE in spades.)

[PatrickHenry]

As for falsifying evolution, I suspect that if Piltdown Man had been a genuine fossil instead of a crude fake, it would have been an incredible problem, as none of the necessary hominid ancestors existed in the British Isles. But the creationists, in their universal ignorance, keep claiming that Piltdown Man was somehow a pillar of evolution.