Every five minutes or so I throw out a question on the material we just talked about, and I can see them start to look through their notes. I say, “Stop. Do not look at your notes. Just take a minute to think about it yourself.” I tell them our brains are like a forest, and your memory is in there somewhere. You’re here, and the memory is over there. The more times you make a path to that memory, the better the path is, so that the next time you need the memory, it’s going to be easier to find it. But as soon as you get your notes out, you have short-circuited the path. You are not exploring
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