Evolution doesn't keep you from making bad choices, it just makes you pay for them.

I think evolution is the most likely explanation, although I agree that the story that is created from the few specimens of man's supposed predecessors is weak at best. Seems like scientists are good at taking a minimum amount of information, and creating a best guess story and then building elaborate scenarios from there. Its like a house of cards.

What I do believe firmly, is that we've been hunting for a long time. The stone weapons show that.