Lets Hypotheses that somewhere in the history after the big bang some species achieved immortality, they realized all their material dreams, they conquered all of the universe. They even became so developed that understood they could imprint their self into matter. They could merge with the universe itself and control every aspect of it. They could become a living Universe. Than after some billion years they get bored and just for the sake of fun started a sort of mental masturbation and recreate the same conditions where they were a ‘’child’ civilization just for the sake of reliving it as if it was everything new again. But the problem this time is that the experience is new in itself because we can not recreat every aspect of our first conditions because we have changed the essential nature of matter making it like us: mind and we understand instead that this is a simulation.