I think there’s a key reminder missing from this “mangled worlds” hypothesis (and its endorsement). And it’s that humans (Us! Me right now!) are configurations of particles. We are not waveunction-riders who can’t touch down in a world if we it doesn’t have the right kind of landing strip. We are the world. The only way for a state of the world to not have humans (Us!) in it is for it to simply not have that configuration of particles.
I mean, past a certain amount of fluency you can easily see there’s a problem by thinking about a weighted quantum coinflip. But it’s more important to really grok that “the probability that you find yourself in a particular world” does not mean there’s anything to call “you” before you’re a configuration of particles.
I think there’s a key reminder missing from this “mangled worlds” hypothesis (and its endorsement). And it’s that humans (Us! Me right now!) are configurations of particles. We are not waveunction-riders who can’t touch down in a world if we it doesn’t have the right kind of landing strip. We are the world. The only way for a state of the world to not have humans (Us!) in it is for it to simply not have that configuration of particles.
I mean, past a certain amount of fluency you can easily see there’s a problem by thinking about a weighted quantum coinflip. But it’s more important to really grok that “the probability that you find yourself in a particular world” does not mean there’s anything to call “you” before you’re a configuration of particles.