"when there is now a six-order-of-magnitude gap between the cost of watching a Khan Academy video ($0) and the cost of dozing through the same content in a Harv

"when there is now a six-order-of-magnitude gap between the cost of watching a Khan Academy video ($0) and the cost of dozing through the same content in a Harvard lecture hall ($250,000)" I think what you are saying is a "Khan Academy" concept as opposed to the actual Kahn Academy... As of the latest info on the Khan academy site (2/23/11) Kahn had done all the videos: http://www.khanacademy.org/about/faq#videos http://www.khanacademy.org/about/faq#videos You're not suggesting that Sal Kahn is in any way shape or form a replacement for learning from multiple qualified professors, instructors etc in their respective fields (even in they are only phd candidates for example) are you? Someone with no real world experience in many of the things he is teaching is "as good" as someone who has actually done something? Sal says "What topics do you plan to cover? "My goal is to cover everything."