KDan writes: "I've written before that you should take notes while reading advice articles. The more I've practiced this, the more I've come to believe that this is an essential learning tool (and one that I haven't been using properly for many years). The difference in learning between taking notes and not taking them feels, intuitively, like it's at least tenfold, maybe a hundredfold. If you don't take notes while reading a non-fiction, "teaching" book, you might as well not have bothered reading it."
Mathematics deals exclusively with the relations of concepts
to each other without consideration of their relation to experience.
-- Albert Einstein