Charlie Munger
Charlie Munger (1924–2023) was Warren Buffett's longtime partner at Berkshire Hathaway and one of the most quotable thinkers on decision-making.
Munger championed the idea of building a Latticework of Mental Models — drawing from multiple disciplines to make better decisions. He argued that relying on a single framework leads to the Man with a Hammer problem: everything looks like a nail.
Key Ideas
- Latticework of Mental Models: Combine insights from psychology, economics, physics, and biology. See Mental Models Overview for the full picture.
- Inversion: Munger famously said, "All I want to know is where I'm going to die, so I'll never go there." Thinking backwards from failure is one of his signature techniques.
- Circle of Competence: Know what you know and, more importantly, know what you don't. Munger and Warren Buffett built Berkshire by staying within their circle.
Munger's emphasis on multidisciplinary thinking also connects to Occam's Razor — he preferred simple, robust explanations over clever but fragile ones.
For a deeper look at how Munger applied these principles to real capital allocation, see link not tracked.