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I think the criticism would be valid as long as Khan's videos were damaging education... but they are improving people's understanding of math. Khanacademy is

I think the criticism would be valid as long as Khan's videos were damaging education... but they are improving people's understanding of math. Khanacademy is being optimized for effective learning. But that takes effort, and it might never be perfect.

makomk 13y ago
Of course, the entire point of the blog is that they're actually cementing people's existing misunderstandings of math...