>20y ago so the odds are low but not impossible (feynman's lectures are on youtube). just sad to think how many great lectures have been lost to time tho
Only a tiny handful. Feynman gave a guest lecture at our physics class at Caltech in the 70's on potato chip worlds. As far as I know, it only persists in my memory.
I sometimes wonder why I didn't buy a cheap cassette recorder and record a bunch of lectures from then. Probably because nobody else did, either.
