This concept from Buffett is epistemological. Next: 3-1a4b1.3 Your circle of competence can be widened, deepened, made clearer Related: 2-1b3a ‘Circle of competence’ & ‘Niches’ - Build a moat. Thrive in where you can. 2-1b3a1 Narrow it down so you can have a chance to build your own moat