Donald;

I can only offer two possibilities... chances are the true answer is an amalgam of these and other factors...

1) Wanderlust... now that you've evolved a bigger brain it's always going to be curious about the next hill/woods/cove/etc.

2) Hunters, especially efficient ones, would tend to lower large game numbers to a point the population could no longer be supported. Can't move back the way you've come, that population is still depressed and recovering. But up ahead the <whatever> aren't even afraid of men yet....

two cents with a ha'penny change coming.

Jammer




Edited 1 time(s). Last edit at 10/24/2006 12:53PM by Jammer.