"An average worker needs to work a mere 11 hours per week to produce as much as one working 40 hours per week in 1950. (The data here is from the US, but productivity increases in Europe and Japan have been of the same magnitude.) The conclusion is inescapable: if productivity means anything at all, a worker should be able to earn the same standard of living as a 1950 worker in only 11 hours per week. "