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The Benefits of Space Repetition for Memory
Space repetition is useful for certain specific use cases such as learning languages, but for long-term improvement, it's better to have less on your mind. Memorization techniques are the opposite of having a second brain where we offload knowledge. For projects with a deadline, it makes sense to have knowledge offloaded, but for other skills, we need them in our brain. A mathematician needs to know a theorem exists to use it.