People have been warning for decades that computerization could cause massive unemployment, but it has not happened. In 1942, economist Joseph Schumpeter coined the term "creative destruction", meaning that as one technology or set of businesses was destroyed, more new ones rose to fill the void. But artificial intelligence, computer automation and control, and nanotechnology have accelerated the pace of change. Perhaps the old businesses may be destroyed faster than new ones can be created, resulting in massive unemployment. If machines make everything, workers will have no jobs and income to buy the production