Re: Fermi Paradox in the news

From: Michael S. Lorrey (
Date: Thu Oct 26 2000 - 23:54:18 MDT

Nick Bostrom wrote:
> Mike wrote:
> At 10:51 AM 10/26/2000, you wrote:
> >Nick Bostrom wrote:
> > >[snip]
> >
> >You said that information about other universes is communicated by the
> >very act
> >of differentiation if the split between one universe and another is the matter
> >of a photon flipping one way and not the other.
> I think you must be confusing me with someone else.

Sorry, I thought that was what you meant by:

> Even if the events which give rise to universes are not causally related in the sense that the outcome of one event causally influences the outcome of another
> (as in the above examples), that does not mean that one universe may not carry information about another. For instance, two universes can have a partial cause in
> common. This is the case in the multiverse models associated with inflation theory (arguably the best current candidates for a multiverse cosmology). In a nutshell, the
> idea is that universes arise from inflating fluctuations in some background space. The existence of this background space and the parameters of the chance
> mechanism which lead to the creation of inflating bubbles are at least partial causes of the universes that are produced. The properties of the produced universes
> could thus carry information about this background space and the mechanism of bubble creation, and hence indirectly also about other universes that have been
> produced by the same mechanism. The majority of multiverse models that have actually been proposed, including arguably the most plausible one, thus negate
> White’s categorical statement.


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