New studies in neuroscience show that psilocybin stimulates neurogenisis (the growth of new neurons), spinogenesis (the re-enlivening of dendrites), and creates a hyper-connected brain state. As the mycologist Paul Stamets notes, the most common mushroom in the African Savannahs (where humans evolved) are psilocybin mushrooms. Over sixty percent of participants using psilocybin in clinical studies report a mystical experience. Could psilocybin give a chemical, neurological, and ecological explanation for the emergence of humanity and religion? This idea, first put forward by Dennis and Terence Mckenna, will be presented in detail, including all the latest science and research. We will then explore the impact of discovering that psychedelics might have played a pivotal role in the emergence of humanity might have on the movement and on the identity of humanity.