[Physicist]

Couldn't DNA testing of animals prove/disprove the theory that, say, all elephants are descended from a single pair just a few thousand years ago?

Yes, and they clearly did not. I believe that even cheetahs, among the least genetically diverse vertebrates, are more diverse than that.

[Dominic Harr]

Yes, and they clearly did not.

Thanks.

I'd say that about proves it, then, doesn't it?

And yet, somehow, we both know it's not that simple.