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Study methods are usually all about what you can do in your own time to maximize what you learn and that's generally most important, but bringing someone else in to your process can be helpful if done correctly, too. That’s what Richard Feynman, a theoretical physicist, thought—at least in theory. According to many possibly apocryphal sources, the Nobel Prize-winner once said, “If you cannot explain something in simple terms, you don’t understand it. The best way to learn is to teach.”

It’s entirely possible Feynman never said that at all. The closest documented quote I could find, courtesy of his colleague and fellow ph

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