You must know the big ideas in the big disciplines, and use them routinely - all of them, not just a few. Most people are trained in one model - economics, for example - and try to solve all problems in one way. You know the old saying: to the man with a hammer, the world looks like a nail. This is a dumb way of handling problems.
Charlie MungerThe way to win is to work, work, work, work and hope to have a few insights And you're probably not going to be smart enough to find thousands in a lifetime. And when you get a few, you really load up. It's just that simple.
Charlie MungerSears had layers and layers of people it didn't need. It was very bureaucratic. It was slow to think. And there was an established way of thinking. If you poked your head up with a new thought, the system kind of turned against you. It was everything in the way of a dysfunctional big bureaucracy that you would expect.
Charlie Munger