A dream within a dream can contradict with that dreaming causing a time dream paradox to form allowing that said dream to travel through millions of dreams over and over again eventually reaching the final dream then restarting the dream loop causing that paradox to become only a dream make the dream loop hole less infinite leading to a dream turning into a nightmare though the nightmare in turn ends up being just a dream within the dream inside and out of the other dreams coinciding with the dream of the paradox therefor make a space time continuum leading straight to a dream.