I suspect that indeed the wave function of the universe is a way of talking about the universe as a single unified monistic thing. The world is clearly divisible in a pretty clear way, but it's also very useful to divide it up into subfactors. So I think that the categories of being fundamentally one or being fundamentally multiple don't fit very easily onto the question of what the universe really is would be my take.
Welcome to the November 2022 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Patreons, whittle them down to a more manageable number — based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good — and sometimes group them together if they are about a similar topic. Enjoy!
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