O'Keryon: What fascinates me is, you know, at some point in the past, I don't know when it, this change maybe in the 80s or 70s, the most effective non-invasive technique a doctor had available was next. And then that changed. We got a whole set of new techniques, MRI and CAT scans and other things, and they keep getting better. But I'm curious the pace of that. It's actually driven more, I think, by intellectual curiosity and in an environment such as BJC healthcare where we are affiliated with one of the leading medical schools in the world,.