2 docs tagged with "warren-buffett"

The Circle of Competence is a mental model developed by Warren Buffett and Charlie Munger that encourages individuals and organizations to limit consequential decisions to domains where they have genuine, developed understanding — and to know precisely where the boundary of that circle lies. The model's central insight is that the boundary matters more than the size; a small circle, clearly known, is far more valuable than a large circle whose edges are uncertain.

The complete mental model system for investment decision-making — Expected Value, Circle of Competence, Margin of Safety, and the 9 cognitive traps that systematically destroy investor returns. Based on the documented frameworks of the world's most successful long-term investors.