They’re coming back from the future, 1,000 pilgrims, heads swimming with visions of the world to come. Reading and writing have vanished. Hospitals have “smart beds” that control your medications. We’re fat and consumed with “cyber road rage,” but we’ve turned a corner in our civilization. We’ve colonized Mars. The future took place for three days, through Tuesday at the Hilton in Minneapolis. We’re talking about the annual conference of the World Future Society, which drew 1,000 people, mostly from the United States and Canada but also from Mexico, Colombia, Venezuela and Germany.