It's interesting to compare the two approaches (and characters) of Feynman and his close colleague (with whom he shared the Nobel), Julian Schwinger. https://en

It's interesting to compare the two approaches (and characters) of Feynman and his close colleague (with whom he shared the Nobel), Julian Schwinger. https://en.wikipedia.org/wiki/Julian_Schwinger#Schwinger_and_Feynman https://en.wikipedia.org/wiki/Julian_Schwinger#Schwinger_and... You could call Schwinger "slow", but he "saw" very deeply. After all, he found and corrected problems with the Dirac equation.