Roxanne Jones: I was looking over your blog and all the articles you've written. There's a ton of resources there. It looks like you've been at this for quite a while. And you said you use the Feynman learning technique as in Richard Feynman, right? Yes. Well, I certainly didn't start off doing this, but this is something I don't remember when I first learned about it. But basically the idea is you take some sort of concept, you learn it, and then figure out how to teach it to someone that really doesn't know anything.