This stumbling out of the hall sounds like folklore. There are contradictory claims about how well the students took the lectures. (I attended Feynman's last le

This stumbling out of the hall sounds like folklore. There are contradictory claims about how well the students took the lectures. (I attended Feynman's last lecture for Caltech freshmen, in the 80s -- a reprise of the volume 1 lecture on general relativity -- and saw nobody reacting like that. Admittedly we weren't going to get tested on it.)