Comment by seadan83
1 day ago
> And indeed the natural and inevitable progression of this world line is a machine world,
Would you mind clarifying your line of reasoning for suggesting this?
Second: quoting wikipedia - "The many-worlds interpretation implies that there are many parallel, non-interacting worlds."
If the multiple words are non-interacting, how could one world observe a large scale extinction event corresponding to the other world line departing? The two world lines are completely non-interacting, there would be no way to observe anything about the other.
[0] https://en.wikipedia.org/wiki/Many-worlds_interpretation
It's the assumption that in our world, a machine civilization is an almost certain end. This might explain the Fermi paradox that we haven't seen other civilization in the universe: each builds an AI that decides to go radio offline for self-preservation.
As for MWI, I'm assuming that the world lines may split, or fork in Unix terms. What causes such splits is an open question. The splits cannot be detected with certainty, but can be guessed by side effects. Here I'm making another guess that inhabitants of MWI must be in one world line only, so when a split happens, inhabitants choose one of the paths, often unconsciously based on their natural likes and dislikes. But what happens to their body in the abandonded branch of MWI? It continues to exist mechanically for some short period of time, and then something happens to it, so it's destroyed, i.e. its entropy suddenly increases without the binding principle that has left this branch of MWI. In practice, one half of inhabitant would observe a relatively sudden and maybe peaceful extinction of the other half, while that other half simply continued their path in the other world line. And that other half will see a similar picture, but mirrored. Both halves will be left wondering what's just happened.
I think you might be vastly overcomplicating it because I didn't think there had to be any sort of "conservation of branching" in the MWI. each nondeterministic event (of which unfathomable quantities take place every moment) generates an infinite number of branches so to even conceive of the total geometry of all the branching (e.g. all that could ever take place, truly) is a bit of a mindfuck, and that's probably okay and the way it was intended. It's supposed to be comforting to know that regardless of how bad reality seems, if we could navigate arbitrarily through the branching space/time/universes then there would be unimaginable infinities of joyful utopias to visit.