Reading a book, say 10 hours, is like a meditation on an idea: you get numerous examples of it and a variety ways of thinking about it. Our brains learn best w

Reading a book, say 10 hours, is like a meditation on an idea: you get numerous examples of it and a variety ways of thinking about it. Our brains learn best when they encounter something often across time (spaced repetition). Reading a single tweet may summarize the book, but the chances of you recalling the idea in an appropriate situation is much lower than if you had spent hours on it.