[marktwain]

Thank you for so cogently and succintly stating the case. I think anyone who studies the issue will come to the same conclusion. A freind of mine who is a research biologist with the Smithsonian said that amoung his peers there was general agreement of the human intervention causing the extinctions. The only question was that it was not politically correct.

He added an interesting twist: That the man - dog hunting team was unbeatable, especially for mega-fauna.

[vollmond]

Why can't both arguments be true? Populations of the creatures were dwindling due to climate change, and were heading for extinction. Throw some hungry humans into the mix, and the process is sped up by a few hundred years. Basically, all the early humans did was kill off the last of a dwindling species.