“Charlie and I have circles of competence that extend to evaluating a number of types of businesses, and there are a whole lot of businesses that we won’t be able to evaluate…. We are best at the businesses where we can come to a judgment that they’re going to look a good bit like they do now five years from now, ten years from now. They’ll be bigger. They’ll be doing different things, but the fundamentals will be the same.” – –Warren Buffett.
Warren Buffett: Fundamentals