I found it kind of humorous this was done at the Esalen Institute, ground zero for a lot of the new age woo, considering Feynman's no-nonsense public persona and being the origin of the phrase 'cargo cult.' Maybe it had other draws.
That is kind of an interesting question. The above quote from " Surely You're Joking Mr Feynman", (by my memory) is from a chapter that, iirc, deals with his time there giving talks trying to inject some logic amidst the woo.
