“The average working week was now twenty hours—but those twenty hours were no sinecure. There was little work left of a routine, mechanical nature. Men’s minds were too valuable to waste on tasks that a few thousand transistors, some photo-electric cells, and a cubic meter of printed circuits could perform. There were factories that ran for weeks without being visited by a single human being. Men were needed for trouble-shooting, for making decisions, for planning new enterprises. The robots did the rest.”