 there's no technical jargon in the books. All right, now you're talking. It doesn't go into math. It goes into common sense stuff. Like if you see Netflix and you think Netflix is a great product, well, you might think about investing in the company. But do some research, see if it's not overvalued, but you might think about investing. Or if you see this online company selling books, you might think it might end up being a pretty decent size. It might turn out okay. It might work out okay. I still remember them asking Bezos, what's your plan B? And his answer was, there is no plan B. That's right.