Just because you don’t notice when you’re dreaming, doesn’t mean that dream experiences could just as well be waking experiences. The map is not the territory; Mach’s principle is about phenomena that can’t be told apart, not just anything you happen not to notice the differences between.
When I was recovering from a psychotic break in 2013, I remember hearing the beeping of a crosswalk signal, and thinking that it sounded like some sort of medical monitor, and wondering briefly if I was actually on my deathbed in a hospital, interpreting the monitor sound as a crosswalk signal and only imagining that I was healthy and outdoors—or perhaps, both at once: the two versions of reality being compatible with my experiences and therefore equally real. In retrospect, it seems clear that the crosswalk signal was real and the hospital idea was just a delusion: a world where people have delusions sometimes is more parsimonious than a world where people’s experiences sometimes reflect multiple alternative realities (exactly when they would be said to be experiencing delusions in at least one of those realities).
My argument is “an infinite universe where everything that is logically possible happens” is more parsimonious than “a universe where only ‘normal’ things happen”
Just because you don’t notice when you’re dreaming, doesn’t mean that dream experiences could just as well be waking experiences. The map is not the territory; Mach’s principle is about phenomena that can’t be told apart, not just anything you happen not to notice the differences between.
When I was recovering from a psychotic break in 2013, I remember hearing the beeping of a crosswalk signal, and thinking that it sounded like some sort of medical monitor, and wondering briefly if I was actually on my deathbed in a hospital, interpreting the monitor sound as a crosswalk signal and only imagining that I was healthy and outdoors—or perhaps, both at once: the two versions of reality being compatible with my experiences and therefore equally real. In retrospect, it seems clear that the crosswalk signal was real and the hospital idea was just a delusion: a world where people have delusions sometimes is more parsimonious than a world where people’s experiences sometimes reflect multiple alternative realities (exactly when they would be said to be experiencing delusions in at least one of those realities).
My argument is “an infinite universe where everything that is logically possible happens” is more parsimonious than “a universe where only ‘normal’ things happen”