Anthropology

with all due respect to your opinion (and certainly your right to offer it), but ....

From around 200,000 (give or take another 50 or 100) - to about 12-15 thousand years ago - sapiens wandered the earth (and populated most of the globe) with little real change other than some new variety of pointed rocks - and perhaps some efforts to wrap ourselves in skins, to counter those nasty updrafts in northern Europe and Siberia. And then, boom! Suddenly (and, as noted, curiously in multiple places and on multiple fronts .. ) - we started changing things up. Real fast.

Simplified, yes. But that the basic outline, and the true meat of the story.

And, as said ... Huge! Regarding who and what we are ... And, no - those couple thousand years when it all happened - is more or less the blink of an eye. (When weighed up against the hundreds that we had been wandering around doing ... ? )