So Stanford can teach classes on programming for the iPhone, but I can't buy a book teaching me how to do the same because Apple's iPhone SDK NDA won't allow it?
I was actually going to take this course this quarter but there is a very low cap on the number of allowed students compared to the amount of demand there is to take the class. So yeah, even though there are >80 students enrolled, a lot of them are probably going to be kicked out.