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Circle of Competence

Know precisely what you actually understand, and don't make major decisions outside that circle.

25 min Advanced

Goal

Avoid the "competence delusion" successful leaders fall into when they assume expertise in one domain transfers to another.

Steps

1

List 10 domains: tech, marketing, ops, management, finance, etc.

4 more steps locked

Expected Outcome

Immediate

You discover 2-3 domains where you were making naive decisions unaware of your limits.

Evidence base

School: Buffett-Munger Investment Wisdom

Founders: Warren Buffett · Charlie Munger (1996)

Popularized by Buffett & Munger in Berkshire 1996 letters. Buffett: "What's important is not the size of the circle, but knowing where the boundaries are."

Frequently asked questions

How long does "Circle of Competence" take?

This exercise takes about 25 minutes, practiced solo in a Written reflection format.

When will I notice the effect of "Circle of Competence"?

You discover 2-3 domains where you were making naive decisions unaware of your limits. In the short term: Within two months, decision failures from "overconfidence outside expertise" drop noticeably.

Is "Circle of Competence" evidence-based?

Yes — it draws on Buffett-Munger Investment Wisdom (Warren Buffett, Charlie Munger (1996)). Popularized by Buffett & Munger in Berkshire 1996 letters. Buffett: "What's important is not the size of the circle, but knowing where the boundaries are."

Is "Circle of Competence" suitable for beginners?

Its difficulty level is: Advanced. No external tools required — it can be practiced directly inside the app.

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