But in most situations a handful of simple variables drives the majority of outcomes. If you’ve covered the few things that matter, you’re all set. A lot of what gets added after that is unnecessary filler that is either intellectually seductive, wastes your time, or is designed to confuse or impress you.

1. Seek out the smartest people who disagreed with me so I could try to understand their reasoning. 2. Know when not to have an opinion. 3. Develop, test, and systemize timeless and universal principles. 4. Balance risks in ways that keep the big upside while reducing the downside.