But in addition to me there's  Bill Richards who's been our chief clinical mentor, and he gave  a spectacular talk yesterday reflecting on his 25 years of  experience of doing research with psychedelic drugs; Matt Johnson,  who's been with us since 2004 and who's my kind of scientific  alter ego at Hopkins, he's been very involved in all of  the psilocybin research throughout the time that we've been doing it;  Katherine MacLean, who's joined us recently, and joined  the faculty, comes with a particular interest in meditation, which is  a focus of some of our research and of interest to me;  Mary Casamano and Brian Richards, who spoke yesterday about  managing difficult experiences; 