On a related note, I read somewhere that Godel was the only person Russell believed had read and understood "Principia Mathematica" besides the author themselves.
"When I was still doubtful as to his ability, I asked G.E. Moore for his opinion. Moore replied, 'I think very well of him indeed.' When I enquired the reason for his opinion, he said that it was because Wittgenstein was the only man who looked puzzled at his lectures."
The Wikipedia article for PM only mentions Wittgenstein and separately a 'shortcut' from Wiener. I would like to know if there are longer writings somewhere.
Thanks for the references so far. I'll look into Cybernetics. I already know of Coq but haven't looked that close, I'll make a note to investigate.