fact he tried 40 times when he graduated not to go and join humble oil and refining company or amoco to work in refineries. he wanted to go into the hospital to work, and no one understood why i chemical engineer could ever work in the hospital. because in those days there were medics and engineers, and they never, they did to work together. but he eventually made it and he has created engineered discoveries that help the human, whether it's artificial skin or one of the other things he has done. but he has thought about the bloodstream as a river, and along the river you can float things, float things to a tumor and it gets to a tumor and it can kill the tumor, rather than putting all the chemicals in the river, you can put one little boat in the river and get it to the tumor. if he succeeds in that, an extraordinary event. it doesn't pollute your body. it just goes to the target, and he has had some success. what i find them very impressive is, not only the breadth of his developments come he's not as the edison of medicine, $25 billion of companies have emanated from his lab, but