And of course every one of these overwhelmingly zillionplexes of zillionplexes of universes is unobservable to us, will never have the slightest affect on us, once they split off from us! Its almost as though they don't exist!
Except things like quantum computers. It's almost like those worlds do exist and that we can even use their transistors to parallel process stuff.
Upon returning and rereading... no. Branches in MWI aren't said to have 'split off' until they are mutually decoherent. That renders them unsuitable for quantum computing.
How many universes "branch off" from a "quantum event", and in how many of them is the cat dead vs alive, and what about non-50/50 scenarios, and please answer so that a physics dummy can maybe kind of understand?
(Is it just 1 with the live cat and 1 with the dead one?)