At the Stanford meeting of the American Physical Society in December ’57, Feynman and I both appeared and we both gave little papers, they were just ten minute papers. And Feynman talked about the main idea of the universal Fermi interaction, and I talked about other aspects. And I mentioned how he and I had calculated the decay of muon into electron plus photon with an intermediate boson, and how we had tried various ways of making the intermediate boson interact with the photon, including the Yang-Mills way; which was the only one that gave a finite result. So we already knew about a Yang-Mills type interaction between the intermediate boson and the photon. And I said how the rate, even when it was finite, still came out much too big and therefore something was wrong. Either there was no intermediate boson, which seemed a pity; or there was a cut-off at very, very…  cut-off of field theory at some very low energy before the intermediate boson mass was reached; or there were two different kinds of neutrinos: red and blue neutrinos, one for the electron and one for the muon. And the people who later did the neutrino experiment were sitting right there, Lederman and Steinberger, and so on, but they never quoted my talk and I was very unhappy about that. They all heard it. They were all… I'm sure they all understood it, but they never quoted it. Now of course I never took the trouble to publish it–well, actually I did write up an article on it, which I wanted to sign with Feynman, but Feynman refused to sign it for some reason.