Inevitably, the reflection and assessment that occurs as you think about how best to express or concretize an insight increases your understanding of it: It’s the old saw about not truly understanding something yourself until you can successfully explain it to someone else.
This, I believe, is why Mark Zuckerberg doesn’t just choose a new learning goal each year, but also publicly shares his efforts to do so and reports on how it turned out. It’s why Bill Gates doesn’t just voraciously read books, but also regularly publishes reviews of them. Through this process, the student becomes the master.
Or to put it in another way, in a contrarian twist on George Bernard Shaw’s well-known aphorism “Those who teach, can do.”
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