When the Stanford computer science professor offered a graduate-level course on artificial intelligence for free online last year, 160, 000 people from 190 different countries signed up.
In 2011, the University of Denver suspended a professor and found him guilty of sexual harassment because his class discussion on sexual taboos in American culture (in a graduate-level course) was considered too racy.
Last year, while teaching a graduatelevel artificial intelligence class at Stanford University, Thrun lamented that his course could only reach 200 students in the suburbs of Palo Alto.