If what you mean by ‘normalize everything’ is to only consider the quantum weights (which are finite as mathematical measures) and not the number of worlds, then that seems more a case of ignoring those problems rather than addressing them.
I mean that the amount of universes that is created will be created anyway, just as a consequence of time passing. So it doesn’t matter anyway. If your actions e.g. cause misery in 20% of those worlds, then the fraction is all that matters; the worlds will exist anyway, and the total amount is not something you’re affecting or controlling.
This third approach is based on the idea that ‘worlds’ are macroscopic, emergent phenomena created through decoherence (Wallace’s book contains a full mathematical treatment of this). This supports both the claim that the number of worlds is indefinite (since it depends on ultimately arbitrary mappings of macroscopic to microscopic states) and the claim that worlds are created through quantum processes (since they are macroscopically indistinguishable before decoherence occurs). My point in the post was that these two claims in combination can avoid the repugnant conclusion via the approach of focusing on the weights.
I honestly don’t think decoherence means the worlds are indefinite. I think it means they are an infinite continuum with the cardinality of the reals. Decoherence is just something you observe when you divide system from environment, in reality the Universe should have only a single, always coherent, giant wavefunction.
I mean that the amount of universes that is created will be created anyway, just as a consequence of time passing. So it doesn’t matter anyway. If your actions e.g. cause misery in 20% of those worlds, then the fraction is all that matters; the worlds will exist anyway, and the total amount is not something you’re affecting or controlling.
I honestly don’t think decoherence means the worlds are indefinite. I think it means they are an infinite continuum with the cardinality of the reals. Decoherence is just something you observe when you divide system from environment, in reality the Universe should have only a single, always coherent, giant wavefunction.