Circle of Competence

Our job really is to focus on things that we can know that make a difference. If something can’t make a difference or if we can’t know it, then we write it off. - Warren Buffett

I’ve learned the perimeter of my circle of competence. If you name almost any big company in the US, I can tell you in five seconds whether or not it is within my circle of competence, and if it is I’ve probably got some sort of fix on it. - Warren Buffett

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