The Pleasure of Finding Things Out and what lecture on nanotechnology are both authored by American physicist Richard Feynman?
The Pleasure of Finding Things Out:  Among these is his famous 1959 lecture "There's Plenty of Room at the Bottom", his report on the Space Shuttle "Challenger" disaster, and his speech on scientific integrity in which he coined the term "cargo cult science". There's Plenty of Room at the Bottom: "There's Plenty of Room at the Bottom" was a lecture given by physicist Richard Feynman at an American Physical Society meeting at Caltech on December 29, 1959.
i don't know