(I'm one of many behind Khan Academy) One thing that can't be said enough — which we internalize deeply at KA but is often confused outside our office — is tha

(I'm one of many behind Khan Academy) One thing that can't be said enough — which we internalize deeply at KA but is often confused outside our office — is that KA intends to be a resource for education, not a complete solution. It's a resource for students who wouldn't otherwise have access to this content and for those having trouble with whatever education they're currently getting. And it's a resource for teachers who want a tool to help make sure students cover core skills at their own pace — so they can spend their class time getting students to work together, using those skills in all sorts of creative ways, and generally adding the highest value teachers can add. I mostly find Dan's advice (and the article's comments) constructive. But taking a step back, it makes me proud that an educational resource covering this amount of content is free, open to this sort of critique, and constantly improving itself. See the comment from Justin Helps, one of our content creators, on Dan's post.