What’s it like to give people hallucinogenic drugs and study what happens? How might these drugs be used for therapy? And what causes people to take drugs in the first place? That’s what we asked Harriet de Wit, who runs the University of Chicago’s Human Behavioral Pharmacology Laboratory, where she administers drugs like LSD, ecstacy and psilocybin to volunteers in an effort to learn more about the human nervous system. “The whole world of researchers is feeling very cautious,” de Wit tells us, “cautiously optimistic — that if the drugs are used under controlled circumstances, they might have some potential benefits.”Let’s get funky.