[perl4ever]

"just think about it. Factories produce with near zero human muscle costs endless supplies of goods that take care of all our vital needs. With a tiny little effort we could almost entirely automate food production."

You're implying that costs are mostly physical effort and automation is a "tiny effort". That's a really weird thing to say on a forum called Hacker News, and why on earth do you think food production isn't "almost entirely automated"? Any prediction of a sudden change in the rate of a trend needs to explain why the change didn't happen more gradually and sooner, as soon as it was possible.