Evidently Oliver Selfridge [1] said a puzzle based on deriving the radius like this once tripped Feynman up... "Puzzles from last week" http://web.media.mit.ed

Evidently Oliver Selfridge [1] said a puzzle based on deriving the radius like this once tripped Feynman up... "Puzzles from last week" http://web.media.mit.edu/~walter/MAS-A12/week11.html http://web.media.mit.edu/~walter/MAS-A12/week11.html [1] https://en.wikipedia.org/wiki/Oliver_Selfridge https://en.wikipedia.org/wiki/Oliver_Selfridge