Jon Fox is the director of the new documentary Newman. The film tells the story of a self-educated inventor named Joseph Newman who in the 1980s claimed to have invented a perpetual motion machine. To Newman's skeptics, his device violated basic laws of physics. But according to Newman --- and many of his scientifically credentialed supporters --- his device was real, and it promised a populist form of free energy that could change the world. Jon Fox spent over a decade working on the film and it's screening on March 8th at IFC Center in New York.