It is axiomatic that progress often means trouble. Virtually every industrial revolution has brought about greater productivity and resulted, in the short term, in fewer jobs. The Fourth Industrial Revolution — that's the coming one, if you haven't kept track — won't be immune to this trend, according to a new World Economic Forum report. As many as 7.1 million jobs could disappear thanks, in part, to developments in fields such as artificial intelligence, robotics, nanotechnology, 3D printing, genetics and biology, according to the The Future of Jobs report released on Tuesday at the World Economic Forum (WEF) in Davos, Switzerland. The net loss to jobs, however, may be lower, since these same industries could create as many as 2.1 million new jobs.