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Mental model · Deciding

Circle of competence

Circle of competence: Knowing the edge of what you actually understand, and behaving differently outside it.

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Knowing the edge of what you actually understand, and behaving differently outside it.

Try it now

List what you could judge without help. Then list what you know just enough about to be dangerous. Mark the boundary.

What to do with the answer

Outside the boundary, change behaviour: ask someone, take a smaller position, or stay out.

Where it misleads

The edge is exactly where you are worst at seeing it. Other people can often see yours better than you can.

The module it belongs to

  • Reflective Thinking — Examine your own reasoning

The book behind it

  • Clear thinking — Its big ideas, in our own words.

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