This is how I would use KA. When you are learning something new, it's helpful to have more than one person explain it to you. Due to our instinct for pattern recognition, I believe this approach helps build a stronger conceptual foundation. IMO the author is right that KA is no panacea, and it seems that in the US, both the GOP and Dems are looking to do more with less in education, so we should be wary. However, saying: "Khan Academy may be one of the most dangerous phenomenon in education today." is hyperbolic. Looking for quick fixes in education and ignoring the fundamentals is dangerous. But KA is a damn fine tool in the toolbox. Personally, I don't think 'flipping the classroom' and having kids watch the lectures as homework will work. A large number of parents won't keep their end of the bargain, and most kids will do everything they can to avoid watching the videos.