Worse though, was that he would needlessly inject his very conservative politics as total non-sequiturs. Test questions like "Hillary Clinton wants to build [obviously unscalable system], explain why it won't work. I found it very unprofessional.
Stanford records a video of every lecture, and enrolled students can then watch them whenever. I remember sitting in my dorm room, watching one of his 75 minute lectures where there was literally 3 students in a 150 person auditorium. It just floored me that this was how a billionaire was spending his time. I do genuinely like the man, you could just tell he was capable of so much more.