The document discusses the philosophical schools of thought and methods of reasoning relevant to chiropractic practice. It outlines the main schools as vitalism, holism and naturalism. Chiropractic is based on the principle that spinal adjustments can treat human ailments. Throughout its history, chiropractic has been divided between those who believe in an innate intelligence (innatists) and those who reject this notion (rationalists). Both Marlow in Heart of Darkness and the Mariner in The Rime of the Ancient Mariner undergo profound journeys that change their character and lead to important revelations about humanity.