Circle of Competence
Your circle of competence is the area where you have genuine knowledge and skill built through experience. Warren Buffett and Charlie Munger emphasize that knowing the boundaries of your circle is even more important than its size.
"Knowing what you don't know is more useful than being brilliant." — Charlie Munger
Why It Matters
Operating inside your circle of competence gives you an edge. Operating outside it, without acknowledging the gap, is where costly mistakes happen. This is why Margin of Safety is essential when venturing beyond what you know well.
The concept connects to Map is Not the Territory: your mental map of a domain is only accurate within your circle. Outside it, the map diverges from reality in ways you may not even recognize.
Expanding Your Circle
You can grow your circle of competence through deliberate practice and honest feedback. Feedback Loops are the mechanism — without them, you can't tell whether you're actually improving or just feeling more confident.