In retrospect, Feynman thought that Pauli must have seen difficulties at once, for after Feynman had spent a long time working on it, he too thought that it was not satisfactory.
Sa paggunita, Feynman-iisip na Pauli ay dapat na magkaroon ng problema tinuturing nang sabay-sabay, para matapos Feynman had nagastos ng isang mahabang oras ng trabaho sa mga ito, siya masyadong-iisip na ito ay hindi kasiya-siya.