Rather than constituting the absence of death, immortality, as properly understood, instead refers to a stable superposition of living and dead states. This condition will herein be termed "Necrofantasia." Drawing upon data gathered via field observation and applying principles from the Copenhagen interpretation of quantum mechanics, this theory assumes that the boundary between life and death represents a permeable membrane, as opposed to an absolute threshold. Evidence discovered surrounding the Izanagi Object (est. 25 million years BCE) and documented cases of barrier perception suggests that certain forms of consciousness may be capable of stable existence within this liminal space.
The question of immortality has historically existed within the classic domains of philosophy or theology. Due to this, scientific investigation has largely avoided the topic due to its apparent unfalsifiability. The conventional understanding of immortality treats it as an indefinite extension of life. Such a conception, however, fails to properly characterize the nature of death itself. If death is understood as a state rather than an event, then this must apply to life as well. Between any two states of being, transitional regions must exist. True immortality does not avoid death. Instead, it achieves a secure residence within the transitional region between life and death. This region may be referred to as "Necrofantasia."