No, when I said "There's no evidence to that" I was referring to wether Van Gogh cutting his ear off was important to his life and work. I didn't discredit everyone's claim to the importance of nothing, just the claims of my closer friends, and I even acknowledged it as anecdotal evidence. Now, when you want to replace 'LSD' with 'physics course', then I'll disagree with you. If someone completed a university physics course, then yeah, they probably actually gained some important insight/knowledge as to how things are. If I ask a physicist why the sun is shining he probably won't answer me that it is "just the effective energy of the whole cosmos"(true quote -- again, lots os my friends took acid). Plus, saying that LSD sometimes leads to novel and important insights is just as anecdotal. Where are all the scientists and Nobel winners that attribute their discoveries to their acid trips? I've heard one or two, mostly just the DNA thing.