I should mention that there’s one place where I tried to calculate what can be accomplished by loops of neurons that are arranged in circular pathways so that if you put a certain pattern in, it will sort of echo around and I showed that, mathematically, that under some conditions, the information that you originally put into such a loop will be gradually destroyed and the pulses will become equally spaced, and that’s sort of interesting, because I had trouble proving this.

And one day I ran into another graduate student named John Nash, and I said: 'How would you deal with this problem?' And he looked at my description of it and he said: 'Well, why don’t you expand that into a Fourier Series?' And I said: 'Oh, well, let me think about that'. I couldn’t figure out what he meant, but after a couple of hours I figured out what that would mean and then I did it, and I proved this theorem and…  so John Nash actually must have solved a lot of problems for other students around Princeton while he was working on his big theory of optimal strategies for games, but in particular, this was a problem I just casually asked him one day, and he promptly told me how to solve it, although he was too busy to actually solve it himself.