Well, one way to interpret the first model (Multiple Worlds) is that if you have 17 equally-weighted worlds and one splits, you get 18 equally-weighted worlds. This leads to some weird bias towards worlds where many particles have the chance to do many different things. Anecdotally, it’s also the way I was initially confused about all multiple-world models.
Once you introduce enough mathematical detail to rule out this confusion, you give every world a weight. At this point, there is no longer a difference between “A world with weight 1 splitting into two worlds with weight 0.5” and “Two parallel worlds with weight 0.5 each diverging”.
Well, one way to interpret the first model (Multiple Worlds) is that if you have 17 equally-weighted worlds and one splits, you get 18 equally-weighted worlds.
Right, but as you point out that’s confused because the worlds need to be weighted for it to predict correctly.
Well, one way to interpret the first model (Multiple Worlds) is that if you have 17 equally-weighted worlds and one splits, you get 18 equally-weighted worlds. This leads to some weird bias towards worlds where many particles have the chance to do many different things. Anecdotally, it’s also the way I was initially confused about all multiple-world models.
Once you introduce enough mathematical detail to rule out this confusion, you give every world a weight. At this point, there is no longer a difference between “A world with weight 1 splitting into two worlds with weight 0.5” and “Two parallel worlds with weight 0.5 each diverging”.
Right, but as you point out that’s confused because the worlds need to be weighted for it to predict correctly.