..."before agriculture was invented", that would mean you wouldn't have any grain to cook porridge from. Nor -- since animal husbandry is usually included with agriculture -- any goats to get the milk from.
Wasn't that fucking OBVIOUS?
Hey, BTW, how old are you...? I ask because I wonder if you are supposed to be getting this senile already -- lately(*), your logic and reasoning seem to be on a level with your grammar and spelling.
(*) OK, maybe not generally, but at least in this post I'm replying to.