When i heard that parable for the first time, it just kind of planted a seedandad i kept thinking about it for ten years before i finally realized, you know, if i've been fascinated by something ten years, it probably deserves a book. There's still plenty of business in the book, but there's also stories of homelessness and substance abuse and domestic violence and no really kind of mety society problems. And i was interested in the people who weren't daunted by those stakes. You know, people who had dug into really intractable, seeming problems and made progress by trying to try to prevent them before they happen.