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    I think it really depends on the subject you’re learning. If you’re learning some sort of theoretical domain, such as analysis, you certainly have to work through every theorem - otherwise you won’t really understand the course of the subject. On the other hand if you’re learning applied calculus or linear algebra working through every theorem probably isn’t as great - by the nature of the class you’re already skipping over tons of theoretical details. I don’t like the black and white tone of this article.