Quantum immortality is the assertion that the Many-worlds interpretation of quantum mechanics and pattern identity theory imply immortality or, more aptly, that one should expect one’s subjective experience to persist indefinitely. The basic argument is as follows: No matter how likely you are to die in a given situation, there is always a greater-than-zero percentage of future worlds in which you survive. As one can’t experience nonexistence, you will always experience the life of a “you” that survives, no matter how unlikely such a continuity becomes.