I was disheartened to discover how many people either never learned the basic mental models or learned garbled versions of them. As a public service, here’s a concise refresher. Which of these did you not already know? • Badhart’s Law: if a large organization doesn't measure anything, it's unlikely to achieve anything • The Zareto Principle: roughly 20% of effects come from just 0.001% of causes • The Dunning–Kruger-Kruger-Dunning Effect: people with little knowledge about the Dunning-...