[Scully]

Fortuitous combinations of random mutations over time and filtered by natural selection is certainly a possibility... but is that demonstrated?

Galapagos finches (Geospiza fortis) have been studied for years by Peter and Rosemary Grant of Princeton University. They have been studying the beak sizes of these birds relative to the amount of rainfall the islands receive annually. In wet years, finches with smaller beaks are favored because of the abundance of small, easy to crush seeds. During drought years, only larger, tougher seeds are available. Finches with small beaks are unable to open these seeds and die out, while finches with larger beaks survive. This is natural selection (or evolution).

[Sabertooth]

This is natural selection (or evolution).

I don't dispute evolution per se, but "natural selection" in the circumstance you're talking about may only a mechanism for filtering a pre-existing gene pool.

That by itself doesn't mean you have a new species.

Let me be really clear... I'm not making the claim that I've disproven evolution.

I'm only suggesting that our handle on the causes of it aren't quite as firm as is frequently claimed.

[scripter]

Galapagos finches (Geospiza fortis) have been studied for years by Peter and Rosemary Grant of Princeton University. They have been studying the beak sizes of these birds relative to the amount of rainfall the islands receive annually. In wet years, finches with smaller beaks are favored because of the abundance of small, easy to crush seeds. During drought years, only larger, tougher seeds are available. Finches with small beaks are unable to open these seeds and die out, while finches with larger beaks survive. This is natural selection (or evolution).

That's microevolution. I don't believe there is any disagreement between evolutionists and creationists of the existence of such microevolution.