Abstract
The Supernatural universe consists of both supernatural and natural beings and elements. The spernatural beings include God, archangels, minor gods, leviathans, angels, reapers, demons, and spirits. The natural beings are humans and other organic life. To see the differences between naturalist thinking and supernaturalist thinking, two possible explanations of a mental illness should be compared. A naturalist explanation would use neurobiology to explain mental illness as driven by brain anomalies either in structure or chemistry. By contrast, a supernatural explanation of mental illness might involve the possession of the person by an evil spirit or demon. Due to the fact that organisms are self‐replicating, and replication cannot be perfect in the material world, genetic codes must evolve. A naturalist could hypothesize that souls self‐replicate through the very same biological process that delivers all our children, since whenever we replicate we tend to also increase the total number of souls.