Will capitalism survive the robot revolution?

Economic experts are trying to figure out a question that just two decades ago seemed ridiculous: If 90 percent of human jobs are replaced by robots in the next 50 years -- something now considered plausible -- is capitalism still the ideal economic system to champion? No one is certain about the answer, but the question is making everyone nervous -- and forcing people to dig deep inside themselves to discover the kind of future they want. After America beat Russia in the Cold War, most of the world generally considered capitalism to be the hands-down best system on which to base economies and democracies. For decades, few doubted capitalism's merit, which was made stronger by thriving globalization and a skyrocketing world net worth. In 1989 -- when the Berlin Wall fell -- the world had only 198 billionaires.