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Comment on If multiverse theory is true, then there is a universe where it isn't.

I don’t really understand why, but this seems to be a common misunderstanding of the multiverse theory.

All it says is that every possible universe exists, so it’s not at all required that everything you can think of exists, just everything permitted by physics. Possible is the keyword here, and you can still have an infinity of universes even if you restrict what is possible.

I’m no expert on the subject, but as I understand it there are generally two types of multiverse theory. The one where you have infinite universes all with the same physical laws, but every unique possibility under those laws exists in the multiverse. And the one where every possible variation on the laws of physics exist (generally talking about different coupling constants rather than entirely different laws). It’s entirely reasonable that both types are one in the same.

In either case, it wouldn’t really be consistent for there to be a universe where the multiverse doesn’t exist, unless it is the only universe and there is no multiverse at all.

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bstix@feddit.dk ⁨1⁩ ⁨year⁩ ago

infinite universes all with the same physical laws, but every unique possibility

What makes different possibilities exist if the laws are the same? Is there a random function somewhere in the laws of physics?

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- MuThyme@lemmy.world ⁨1⁩ ⁨year⁩ ago
  Different arrangements would do it, or you could think of it very loosely as the “if you made different decisions in each” kind of thing. Events/history is different, essentially
  
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- fkn@lemmy.world ⁨1⁩ ⁨year⁩ ago
  You can combine the same atoms into different larger elements. It’s like that. The same physical laws, but the combinations are infinite (or at least uncountable).
  
  The other concept is that the laws are different, but not true infinite combinations within reach.
  
  Or both.
  
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  - bstix@feddit.dk ⁨1⁩ ⁨year⁩ ago
    What combines the atoms differently when the laws of combining atoms are the same?
    
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    fkn@lemmy.world ⁨1⁩ ⁨year⁩ ago
    What do you mean? It’s chemistry…
    
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FelipeFelop@feddit.uk ⁨1⁩ ⁨year⁩ ago
We’ll call it Pussyphobics Paradox.

“Given an infinite number of universes comprising a multiverse, at least one will have conditions that render a multiverse impossible”

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