Feynman also advocated for not brushing your teeth. He wasn't really any kind of health expert. And even if he reasoned UV light wouldn't hurt him, he still ha

Feynman also advocated for not brushing your teeth. He wasn't really any kind of health expert. And even if he reasoned UV light wouldn't hurt him, he still had to duck to avoid the exposure. So if there's anything to take away from his story it's that he didn't know what he was talking about.