Avoiding stupidity produces more long-term advantage than seeking brilliance
Charlie Munger, in a letter to Wesco shareholders: "It is remarkable how much long-term advantage people like us have gotten by trying to be consistently not stupid, instead of trying to be very intelligent."
The insight isn't that brilliance is bad. It's that most people — even smart ones — overestimate how often they're in a position to be brilliant, and underestimate the compounding cost of avoidable errors. Systematic error-avoidance is more reliable than intermittent flashes of insight, especially over long time horizons where errors accumulate.
This is easiest to see in domains where you're clearly not an expert: outside your circle of competence, where the game rewards not losing more than it rewards winning.
The goal isn't to avoid all risk — it's to avoid stupid risk. Errors you could have seen coming. Moves you weren't equipped to make. Playing someone else's game.
Source claim: Consistently avoiding errors compounds into greater long-term advantage than attempting to generate brilliant outcomes.