 And frankly, most of our history, a lot of our tools function that way. But again, it was an understanding of the greats, the great classical works in literature and understanding of history. But it was also the belief that through grammar, which is an understanding of basic facts, logic, actually understanding how those facts interact with each other. And then rhetoric, which means you got to use facts and logic to make an argument or an argument doesn't hold water. You can really teach the foundations of just about anything.