  A central open problem of quantum physics is to reconcile theory with
experience. In this work I present a framework for studying distinct modes of
experience in a superposed world. A modes of experience is characterized by how
the world, experiences, and options relate to each other by the perceptions,
decisions, and actions, as well as by probabilistic rules encoding
probabilistic or deterministic correlations among first person experiences. In
a toy model, the life expectancies of beings in different candidate modes of
experience are compared. It is found that the quantum mode without macroscopic
superposition outlives that with macroscopic superposition and that with real
amplitudes. These highlight the prospect to explain a mode of experience by its
evolutionary advantages.
