I’m not sure what you mean by cosmological multiverse.
Re distinction between branching and diverging—I think even without adopting verificationism, one can plausibly argue that that distinction is meaningless.
By cosmological multiverse, I mean Level I or II.
It is arguable that the distinction between branching and diverging is meaningless, or that Level I and II should be viewed as branching, but that is not the usual view.
I think it’s clear it’s not meaningless, and that those who think it’s meaningless just favor viewing every kind of splitting as branching. Let me explain:
To say the future branches, what I mean is that there is no fact of the matter what exactly will happen in the future.
To say the future diverges, what I mean, is that there is a fact of the matter about what will happen in the future, but that there are observers just like me who will observe a different future.
Either there is a fact of the matter what will happen in the future, or there isn’t (?!). It may indeed be the case that the concept of diverging is incoherent, in which case the only kind of splitting is branching. This is a heterodox view, however.
I’m not sure what you mean by cosmological multiverse.
Re distinction between branching and diverging—I think even without adopting verificationism, one can plausibly argue that that distinction is meaningless.
By cosmological multiverse, I mean Level I or II. It is arguable that the distinction between branching and diverging is meaningless, or that Level I and II should be viewed as branching, but that is not the usual view.
I think it’s clear it’s not meaningless, and that those who think it’s meaningless just favor viewing every kind of splitting as branching. Let me explain: To say the future branches, what I mean is that there is no fact of the matter what exactly will happen in the future. To say the future diverges, what I mean, is that there is a fact of the matter about what will happen in the future, but that there are observers just like me who will observe a different future.
Either there is a fact of the matter what will happen in the future, or there isn’t (?!). It may indeed be the case that the concept of diverging is incoherent, in which case the only kind of splitting is branching. This is a heterodox view, however.
So your claim that it’s not meaningless is basically just the negation of my third premise.