my favorite example that i use in the book is richard feynman and jon nash. richard feynman friend the nobel prize in physics for his work in quantum mechanics, specifically quantum electrodynamics of how the subatomic particles interact with each other. and he invented as a bird diagrams. these diagrams of how the subatomic particles interact with each other. they collide and interact and our. these are called feynman diagrams. he sketches the them out and adds mathematical equations to them. so powerful these diagrams they are still used today i physicist to explain the complex interactions of subatomic articles. so popular with diagrams that he had diagrams drawn on the side of his 1976 dodge cargo van which he drove around pasadena california where i'm from. in fact simon lived in alta made aware that. story goes when he was driving on lake boulevard where the rose parade is there and someone stuck stopped him stuck a metal light and rolled up the win and said how come you have feynman diagrams on your band? he said because i am feynman. that would be a c