Earlier quoted context omitted.
Harry Potter and the Methods of Rationality is splendid. Some of the most vigorous writing I've ever encountered. I agree, it is highly recommended.
BLOOD FOR THE BLOOD GOD Edit: On a more serious note, this book actually changed the way I think in a very concrete (and positive) way. The book spurred me to start consciously reflecting on "what about X, specifically, is surprising" and/or "what about X, specifically, is confusing". It's impossible to quantify, but the habit has definitely, definitely, boosted my ability to disentangle complex situations and make b…
Seriously though. "Codex Chaos" is pretty super sweet, if sweet is skyscraper size demons of the darkness of mankind. Excellent light reading.