The mathematician, the physicist and the engineer

Mathematicians have always considered themselves superior to physicists and, of course, engineers. A mathematician gave this advice to his students:
" If you understand a theorem and you can prove it, publish it in a mathematics journal. If you understand it but can't prove it, submit it to a physics journal. If you can neither understand nor prove it, send it to a journal of engineering. "

Freeman Dyson, a brilliant mathematician as well as a world famous physicist, disagreed. He wrote, only partly tongue-in-cheek-modern physics is both highly imaginative and obscure that,
" Most of the papers which are submitted to the Physical Review are rejected, not because it is impossible to understand them, but because it is possible. Those that are impossible to understand are usually published. "