If your approach to mathematics is mechanical not mystical, you're not going to go anywhere. - Nassim Nicholas Taleb

Learn to read history, get all the knowledge you can, do not frown on the anecdote, but do not draw any causal links, do not try to reverse engineer too much -- but if you do, do not make big scientific claims.

As I got her to explain to other people her evidence about the lack of effectiveness of funding formal education, one person got frustrated with our skepticism. Wolf’s answer to him was “real education is this,” pointing at the room full of people chatting. Accordingly, I am not saying that knowledge is not important; the skepticism in this discussion applies to the brand of commoditized, prepackaged, and pink-coated knowledge, stuff one can buy in the open market and use for self-promotion.

As Yogi Berra said, “In theory there is no difference between theory and practice; in practice there is.