i have heard this theory before, I had understood that it was a co-incidence, especially as I have never met a man who would come out of his cave to build a house or mow the lawn when the beer was flowing. He He He
My understanding has always been that the weather was a large factor in civilisation (ie getting in out of the cold) it was probably while the men were sitting around waiting for the ice age to pass that they forgot to put the hops juice in the Ice box. It went off and they were to lazy to go and get more. They drank it, like the effects...
Bada Bing, BEER!
LOL