Exactly right. Khan Academy's macro effect on K-12 education at present is limited to challenging the value and application of lectures. (Gamification of educat

Exactly right. Khan Academy's macro effect on K-12 education at present is limited to challenging the value and application of lectures. (Gamification of education which is not an original concept at all.) It's not even close to replacing instruction, since there are dozens of valuable things that instructors do besides lecture. And the notion that it will replace or even put a dent in traditional higher ed in our lifetime is pretty uninformed -- that isn't the problem they're setting out to fix.