This is the final exam for What Are Mental Models? It pulls together all four foundations: what a model is, why the map is not the territory, the latticework, and the circle of competence. Take your time and reason each one through.
How this exam works
Read carefully — this exam is final. Each question appears one at a time. Once you submit an answer it is locked for good: there’s no going back, no retry, and no restart. Your score is hidden until the end, where you’ll see a pass/fail verdict. The pass mark is 70%. A few questions ask you to select all correct answers.
Which single sentence best defines a mental model?
Select an answer to continue.
Course Recap
Big picture
The four foundations, in one picture
- What are mental models
- A model is a simplification
- Compressed map of how something works
- Map is not the territory
- Every model omits detail
- The latticework
- Many models cover each others blind spots
- Circle of competence
- Know the edge of what you understand
- A model is a simplification
Key takeaways
A mental model is a useful simplification of how something works. Every model is less than the reality it describes, so stay alert to what it leaves out. No single model is enough — a latticework of models from many fields covers each other’s blind spots. And all of it rests on honesty about your circle of competence: the edge of what you genuinely understand. Carry these four, and you’re ready for the next models on the ladder.