You can hear it straight from the horse's mouth (Hans Bethe, director of the technical division at Los Alamos) about Feynman https://www.youtube.com/watch?v=e4e

You can hear it straight from the horse's mouth (Hans Bethe, director of the technical division at Los Alamos) about Feynman https://www.youtube.com/watch?v=e4e1jdt-n8U https://www.youtube.com/watch?v=e4e1jdt-n8U