Author Charles Mann joined Freakonomics Radio to reveal that legendary physicist Richard Feynman spent his final years experimenting with illegal drugs.
Speaking on the episode "The Vanishing Mr. Feynman (Update)", Charles Mann recalled that as Feynman neared death, he decided, "Well, now I'm gonna experiment with all kinds of drugs because I'm dying anyway, more or less." Though Feynman was a "think-for-yourself" figure, Charles Mann noted that he remained a "nevertheless law-abiding citizen" who felt a bit embarrassed by his late-life drug use.
While popular culture often romanticizes the idea of the drug-fueled scientific breakthrough, Charles Mann pushed back on that narrative. He made it clear that Richard Feynman did not believe "he was having brilliant insights rushing in because he was in some altered state." Instead, Feynman told him that "peace of mind is an essential feature" of creative science.
As public fascination with the history of nanotechnology and quantum physics continues to grow, Charles Mann's recollections serve as a necessary reality check, reminding us that even the most eccentric scientific minds prioritized mental clarity over chemical shortcuts.