Psychedelics tend to operate on your serotonin centers, so this makes sense. And with LSD much more than psilocybin, I understood why Silicon Valley types might use it for an added edge. On the third day of taking LSD, however, I was stressed for external reasons—sleeplessness, competing deadlines—and was a general lout to everyone around me. And on Thursday night, I was a little loopy after a long day's work—more "creative," perhaps, but also noticeably weirder, as reported by co-workers. Which is to say, my moods seemed amplified, not assuaged by the drug, a confirmation of the old psychedelic saw that what you get out of LSD is, by and large, what you bring with you. I wouldn't repeat it on a bad day—but on a good day, I could see it as a productivity tool.