I particularly liked one of the points that Grey made towards the end: what do we do about all of the people who will be "unemployable through no fault of their own"? Right now our economic system is predicated on rewarding those who deserve wealth (as judged by ability or hard work). The converse of that is that we as a society accept that the undeserving (stupid and/or lazy) will be punished economically. We rationalize this because we convince ourselves that it was their own fault, therefore it's "fair" . But what happens when intelligent, hard-working -- and therefore deserving -- people are unemployable? It's going to be a massive shock to people and to the system. (Or we will enter a state of mass cognitive dissonance and convince ourselves that the majority of the population has become stupid and lazy and so is getting what they deserve.)