>Henry Ford had ordered a dynamo for one of his plants. The dynamo didn’t work, and not even the manufacturers could figure out why. A Ford employee told his boss that von Neumann was “the smartest man in America,” so Ford called von Neumann and asked him to come out and take a look at the dynamo. >Von Neumann came, looked at the schematics, walked around the dynamo, then took out a pencil. He marked a line on the ou…
A search gives me only what I see as lowish reputation sources, like the fandom wiki you linked.