i don't know if you know billy koehn but he is from houston., a harvard trained, baylor trained, harvard trained and unalso magician and plays trombone in a band and -- i don't think the guy sleeps and then billy -- he is also a spectacular inventor but one day he was in his office, waiting to -- every week he would see people with inventions just to tell them, yes, no, maybe this will work, and there was some kid coming in from australia and he could barely bring himself to meet with the guy, and this kid comes in with this backpack and takes a device out of that's wrapped in rags and says, i think this will work as an art artificial heart, and because billy is an inventer he looked at the thing and, excuse me, he said, holy shit, this is it. so the latest iteration in the heart that i write about predominantfully in my book has one moving part and that's about this big. but they saw from a prototype this would do it. and they're all crazy. every one of them. >> i was just going to say to be in the field you have to have a daredevil side to you. so you have plenty of anecdotes about the