 
 <prompt> ```Who document di experimentation with a psychedelic by a professor for Caltech? Given di previous question, write a context wey contain di answer. E fit be 1 - 20 sentences. Context:``` <response>: According to Genius, the James Gleick-authored biography, Feynman try LSD during im time as professor for Caltech. E dey somehow shame for im actions, so e no too talk about am for im stories; e just mention am small for di "O Americano, Outra Vez" section, while di "Altered States" chapter for Surely You're Joking, Mr. Feynman! yarn about only marijuana and ketamine experiences for John Lilly's famous sensory deprivation tanks, as a way to study consciousness. Feynman stop to dey drink alcohol when e begin dey show small, early signs of alcoholism, as e no wan do anything wey fit spoil im brain—the same reason wey e give for "O Americano, Outra Vez" for im no too dey eager to experiment with LSD. 