According to , the James Gleick biography, Richard Feynman experimented with LSD during his professorship at Caltech. Somewhat embarrassed by his actions, Feynman sidestepped the issue when dictating his anecdotes; consequently, the "Altered States" chapter in describes only marijuana and ketamine experiences at John Lilly's famed sensory deprivation tanks, as a way of studying consciousness. Feynman gave up alcohol when he began to show early signs of alcoholism, as he did not want to do anything that could damage his brain.
According to Professor Steven Frautschi, a colleague of Feynman, Feynman was the only person in the Altadena region to buy flood insurance after the massive 1978 fire, predicting correctly that the fire's destruction would lead to land erosion, causing mudslides and flooding. The flood occurred in 1979 after winter rains and destroyed multiple houses in the neighborhood.
Feynman's Thesis: A New Approach to Quantum Theory FEYNMANS THESIS
From his diagrams of a small number of particles interacting in spacetime, Feynman could then model in terms of those particles' spins and the range of coupling of the fundamental forces. Feynman attempted an explanation of the strong interactions governing nucleons scattering called the parton model. The parton model emerged as a rival to the model developed by his Caltech colleague Murray Gell-Mann. The relationship between the two models was murky; Gell-Mann referred to Feynman's partons derisively as "put-ons". Feynman did not dispute the quark model; for example, when the fifth quark was discovered, Feynman immediately pointed out to his students that the discovery implied the existence of a sixth quark, which was duly discovered in the decade after his death.