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Author Topic: When the multiverse and many-worlds collide  (Read 11121 times)
Altair
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« Reply #30: June 05, 2011, 07:28:52 am »

The information isn't really lost to the universe, it's just inaccessible (by any currently-known means) from the portion of the universe that's outside of the black hole. You could think of it (loosely) like having stuff inside a room that can be entered, but never left, in your house. The stuff's still in there, but you can't go in and get it and then come back to what you were doing and you're not sure what state it's in (it could be going mouldy, or being eaten by rats and silverfish). You could go in and check and sit around and play with your stuff (if it's still in a fit state to be played with), but you can't come back out and tell anyone what's going down in there. Main point is that it's still in your house, you still have it, but it's only accessible if you're in the room with it.

But isn't that what violates the particular law of physics I'm thinking of? According to the law, the information is always accessible, even if one doesn't have wherewithal to interpret it. But black holes seem to violate that law.
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« Reply #31: June 05, 2011, 08:34:37 am »

Another theory about black holes and a possible multiverse (I remember reading about this in layman's terms years ago) suggested that all the matter pouring down a black hole may actually form a new pocket universe; that in fact, our own universe may be the pocket universe of another universe, spawned by a black hole in that universe; and that effectively black holes may be the mechanism by which universes "procreate", and one could build a whole genealogical tree of universes...except that there's no way of communicating from one to the next and thus no way to prove the existence of these other parent-child universes and therefore no way to prove the theory.

I remember that hypothesis. I'm not sure of its status as it is one of those "probably no way to disprove" hypotheses.
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« Reply #32: June 05, 2011, 11:03:25 pm »

But isn't that what violates the particular law of physics I'm thinking of? According to the law, the information is always accessible, even if one doesn't have wherewithal to interpret it. But black holes seem to violate that law.

My understanding is that from the perspective of the law, it is accessible. It's just that the accessibility is quite localised and once you get to the spot from which you can access it, then it's a bitch to get back to any other spot Smiley
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« Reply #33: June 06, 2011, 08:14:07 am »

My understanding is that from the perspective of the law, it is accessible. It's just that the accessibility is quite localised and once you get to the spot from which you can access it, then it's a bitch to get back to any other spot Smiley

This is one of the things physicists are arguing about: what counts as accessible. If you can never exit that localized area with the info, is the info really accessible to the rest of the universe?
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« Reply #34: June 06, 2011, 08:25:17 am »

This is one of the things physicists are arguing about: what counts as accessible. If you can never exit that localized area with the info, is the info really accessible to the rest of the universe?

Barring quantum entanglement, i think that's a pretty resounding no. That said, not accessable to the rest of the universe is not the same as not accessible within the universe. My limited understanding was that to breach the law under discussion required the latter. It's by no means my area of expertise though.
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