Warren Buffett

Warren Buffett started investing at age 11, filed his first tax return at 13, and bought farmland before he graduated high school. He learned to hunt cheap "cigar butt" stocks under Benjamin Graham, then, pushed by Charlie Munger, evolved into something rarer. When everyone piled into dot-com stocks in the late 1990s and he looked foolish sitting it out, he held. The crash vindicated him, and he had the cash and the nerve to buy while others panicked.

For founders and operators, this case is about capital allocation as the highest-leverage skill in any organization, and the brutal honesty it requires about where you actually have an edge. It asks where your company is spending time, money, and attention outside its real circle of competence, and what fashion or fear is driving that drift. The way Buffett defined the edge tightly and defended it under pressure is the part the app keeps for you.