Mental Models: The Best Way to Make Intelligent Decisions
Farnam Street (Shane Parrish) · 2015
"Reliable judgment comes from holding a 'latticework' of the most important ideas across disciplines — psychology, economics, physics, biology — rather than mastering just one, since any single-discipline lens reliably misses something a real situation depends on."
A mental model is a simplified representation of how something works, used to understand, predict, and decide; the 'latticework' idea is that no single model from any one field is sufficient on its own — economics alone, or psychology alone, or physics alone will each miss something a situation depends on. Reliable judgment comes from holding a cross-disciplinary set of models and knowing which one(s) actually apply to the specific situation in front of you.
Since each model is drawn from a genuinely different domain (inversion from mathematics, natural selection from biology, supply and demand from economics, cognitive biases from psychology), stacking multiple models against the same problem catches errors that any single lens would miss on its own — the way viewing an object from several angles reveals its true three-dimensional shape rather than a single flat silhouette.
Whose speech is credited as the direct origin of Farnam Street's entire 'latticework of mental models' framework?
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The explanation above is written with AI assistance. These are the originals — go to them to check it.
- A Lesson on Elementary, Worldly Wisdom (USC, 1994)Charlie Munger / Farnam Street
- Charlie Munger Lecture: Elementary Worldly Wisdom as it Relates to Investing & BusinessYouTube
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