“…To date, all clinical studies on psilocybin-assisted therapy have evaluated the comprehensive effects of both the compound action and psychotherapy interventions, encompassing rigorous psychological preparation, debriefing sessions, guided support, and environmental manipulations during the administration session . In addition, nonpharmacological factors have been shown to play a crucial role in determining the quality and nature of the subjective experiences associated with psilocybin use in humans, as well as the potential therapeutic outcomes arising from such use. − These factors have been referred to as “set and setting”, where “set” refers to mindset and includes psychological and emotional components, such as expectations, mood, personality, and past experiences, and “setting” includes physical components such as the location, lighting, and comfort of the environment, as well as social components such as the presence of other people and their relationship to the individual . Consequentially, the inclusion of these nonpharmacological variables poses a significant challenge to isolation of the biological and pharmacological effects of psilocybin alone through human studies. , …”