I imagine - but have no data to back me up on this - that a lot of those comments you mentioned on Khan Academy come from two types of people. Those who are re

I imagine - but have no data to back me up on this - that a lot of those comments you mentioned on Khan Academy come from two types of people. Those who are relearning the subject and are amenable to applications and those who say they want the cool problems but when they are actually done fall into the 99 category I mentioned above. It sounds to me like you haven’t taught much. I could be wrong.