Here he discusses the common features that he has observed in his studies of shamans around the world. He describes their rituals in terms of drumming, dancing, sensory deprivation, drugs, diet, and dreaming. He notes that shamans often invoke the “trickster” archetype, but that this should not be taken to imply that they are necessarily fraudulent. Shamans receive that designation from their community; and they work in the service of that community. A self-appointed healer, therefore, is not a shaman. However, all shamans are healers.