"It's the same when you listen to any kind of successful athlete. My older brother has a useful name for them - he calls them lottery ticket careers. I are engaged in what he calls these lottery ticket careers. On the one hand it's very, very unlikely that you're ever going to hit it. On the other hand if you do hit it, you really hit it. You have to be engaged with it, though, maybe you're entire life. And if you never actually do hit it? You kind of jovially lie yourself along the way and recognize that it may produce things outside the hitting it kinds of goods, I suppose."