I run an analytical chemistry lab doing method development on work that is so groundbreaking that if I got into the details, you'd be able to trace me right to my actual research group. You'd be pleasantly surprised to know how many professors and researchers go home at the end of the day and unwind with a dry academic paper and a joint. I know it certainly helps me focus and solve problems in more creative ways. People who don't know I smoke would never suspect it, and people upon finding out for the first time that I smoke invariably react with disbelief and say, "I'd never guess in a million years; you don't act like a stoner!!" To which I reply, "No, I actually DO act like a stoner. I just don't act like the STEREOTYPE of the stoner."