Scientists argue that beer motivated our ancestors to start grain farming
m.nautil.us
m.nautil.us
https://www.timeline.com/stories/if-you-like-beer-for-breakf...
It's striking that yeast makes both bread and beer (e.g. rising dough smells like beer), but beer is simpler and easier to make.
Humans at that time would have little genetic alcohol resistence - compared with the average genetic makeup of today.
Perhaps early cities grew, not because of efficiency, but the municipality gave out free samples - gateway agriculture.
But I doubt it, as fermented fruit is a far easier source of alcohol. Just let it rot.
Fermentation was most likely an unexpected or even undesirable outcome of saccharification since we can't digest starch that well. Because saccharification of starch requires an enzyme which is usually gained from malting the grain you can't really avoid fermentation especially in the pretty unsterile conditions of the Stone Age.
I had to spend an hour on wikipedia afterwards to determine if it was a spoof or serious show! (I still don't know about some parts of it :)
It's a pretty fun read, I recommend it.
https://www.youtube.com/watch?v=Yocja_N5s1I&list=PLBDA2E52FB...