alt Hacker Newshttps://en.wikipedia.org/wiki/The_Martians_(scientists)
The Martians (of which von Neumann is usually the most regarded) were mostly Hungarian jews. It's a point on which some people have mused, so it's easy for the thought to point in that direction when von Neumann is brought up.
from the wiki > Leo Szilard jokingly suggested that Hungary was a front for aliens from Mars.
I had a girlfriend once who joked that Elon Musk was an alien and needs help developing the technology to get home.