Eliot Martin Glick posted:

 > Keep in mind that most
 >of your "paleo-persons" only lived to be 25-35 years old.

Which makes no sense. It takes say 16 years for a human to develop to the
stage where they can go out on their own and reproduce. If they died at
25-35 they'd be lucky if they were able to raise a single child. And with
the problems of infant mortality we, as a race, would have died out long ago.

Of course, the person that wrote that is simply wrong.

Plus that wouldn't be long enough to pass on the hunting and gathering
knowledge to the next generation.

Don.