On 7 November 2013 11:31, meekerdb <meeke...@verizon.net> wrote: > On 11/6/2013 2:09 PM, LizR wrote: > >> That's similar to my pet theory for explaining the Beckenstein bound - >> information capacity only goes up as volume in the multiverse. >> > > The volume of the multiverse is generally thought to be infinite. Even the > volume of our universe may be infinite. If you want to apply the > Beckenstein bound, consider the observable universe since its boundary > forms an horizon relative to us. > > Yes. The BB has to be applied to a finite volume. Indeed it seems ridiculous, intuitively - the volume of the universe is quite likely infinite, so we can apply the BB on larger and larger scales for as long as we like (in theory) - and if we do so, we will presumably find that we reach a point where the information content we derive for the interior of that volume is insufficient to account for its contents. (Or does something always prevent that happening in practice - is this the point at which we reach a "cosmic horizon" ? Does the BB have an "information protection conjecture" that makes the universe safe for information theoreticians?)
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