Sebastian Thrun left a high-powered Silicon Valley life — working in Googles secretive Google X lab, teaching about artificial intelligence and robots at Stanford — to pursue what he deemed a higher calling. A study found that only seven percent of people who take a class like Udacitys actually finish, and most that do already had bachelors degrees to begin with — free online courses have hardly been the democratizing, wide-reaching force Thrun and others had hoped for. Fast Companys Max Chafkin paints Thrun as a lover of the humanities, talking about robots in terms of human ideas and human behavior.