Al, you're being very nice today. Did you find a roomy owl burrow for hurricane season to slow the brain bubbles?
Seriously though, when human societies made the move from "Man,The Scavenger" to "Man, The Hunter" and became a dominant predator at the end of the last major ice age, their ability to control fire turned vast swaths of woodlands into a semi-open "Savannahstan" overrun with tasty grazing animals, like horses, cattle, and goats.
From there it was a simple matter of finding the right grains to create the real engine of civilization, beer.