“Most intelligent beings lack a permanent physical form. Instead, they exist as software capable of instantly moving between computers and manifesting themselves in the physical world through robotic bodies. Because these minds can readily duplicate themselves or merge, the “population size” keeps changing. Being unfettered from their physical substrate gives such beings a rather different outlook on life: they feel less individualistic because they can trivially share knowledge and experience modules with others, and they feel subjectively immortal because they can readily make backup copies of themselves. In a sense, the central entities of life aren’t minds, but experiences: exceptionally amazing experiences live on because they get continually copied and re-enjoyed by other minds, while uninteresting experiences get deleted by their owners to free up storage space for better ones.”