The claim that MWI is true and all those possible worlds really exist is pretty much modal realism, insofar as it’s the claim that all possible worlds are as real as this one.
Please let’s not be confusing MWI with Tegmark IV here.
Modal realism talks about all logically possible worlds and so it’s much closer to Tegmark’s Ultimate Ensemble.
Please let’s not be confusing MWI with Tegmark IV here.
Modal realism talks about all logically possible worlds and so it’s much closer to Tegmark’s Ultimate Ensemble.
This appears to be a similar confusion over the word “possible” to the one that lets some people think p-zombies are an idea worth considering.