Charlie Munger
Strip away assumptions. What's actually true?
Investor, vice chairman of Berkshire Hathaway, and one of the most celebrated thinkers on mental models. Munger advocated building a latticework of frameworks from multiple disciplines - psychology, physics, biology, history - to avoid the blind spots that come from seeing the world through a single lens.
Books
- Poor Charlie's Almanack
- Seeking Wisdom: From Darwin to Munger
Quotes
“Invert, always invert.”
“I never allow myself to have an opinion on anything that I don't know the other side's argument better than they do.”
Principles
Mental Models
Build a latticework of frameworks to see reality more clearly.
A person who only knows accounting will try to solve every problem with accounting. Munger's insight is that the best thinkers collect models from many fields - evolution, psychology, physics, economics - and use them in combination. The more models you have, the fewer blind spots.
Inversion
Instead of asking how to succeed, ask what would guarantee failure.
Most people think forward: "How do I get what I want?" Munger inverts: "What would guarantee I fail?" Then avoid that. Want a good relationship? Instead of listing what you want, list what would destroy one. Inversion reveals blind spots that forward thinking misses.
First Principles Thinking
Break problems down to their fundamental truths before reasoning up.
Most reasoning is by analogy - "this is like that, so do the same thing." First principles thinking strips away assumptions and conventions to find what's fundamentally true, then builds up from there. It's slower but finds solutions that analogy-based thinking can't.
Connections
- Shane ParrishParrish built Farnam Street largely around Munger's ideas - the site is named after Berkshire Hathaway's street.
- Derek SiversBoth favor radical simplicity in thinking and ruthless elimination of what doesn't matter.
- Jeff BezosBoth use inversion and long-term thinking as core decision-making tools.