Hi Bruno Marchal I would think that each universe provides its own distinctive context to any calculation, including comp. So I wonder why you seem to endorse (or at least don't deny) a multiverse.
----- Receiving the following content ----- From: Bruno Marchal Receiver: everything-list Time: 2013-01-31, 10:15:20 Subject: Re: multiverses and quantum computers On 31 Jan 2013, at 15:15, Roger Clough wrote: Hi Telmo Menezes Perhaps you're right, but to my limited knowledge, a quantum has infinite paths available between points A and B without invoking another universe. Once we are able to use (classical) information obtained in the other quantum paths, like when doing a Fourier transform on some superposition of many computations, like in a quantum computer, what makes them different of other universes? Bruno So no problem. ----- Receiving the following content ----- From: Telmo Menezes Receiver: everything-list Time: 2013-01-31, 08:13:30 Subject: Re: Re: About the Infinite Repetition of Histories in Space Hi Roger, In the one universe model, where does the extra computational power of quantum computers come from? On Thu, Jan 31, 2013 at 2:09 PM, Roger Clough <[email protected]> wrote: Hi Telmo Menezes IMHO more than one universe is unjustified. ----- Receiving the following content ----- From: Telmo Menezes Receiver: everything-list Time: 2013-01-30, 12:10:08 Subject: Re: About the Infinite Repetition of Histories in Space Hi Roger, I find it harder to believe in finite universes. Why the precise number, whatever it is? On Wed, Jan 30, 2013 at 12:46 PM, Roger Clough <[email protected]> wrote: Hi Stephen P. King It's easier to believe in salvation through faith or UFOs than infinite universes. ----- Receiving the following content ----- From: Stephen P. King Receiver: everything-list Time: 2013-01-28, 09:20:33 Subject: About the Infinite Repetition of Histories in Space Hi, ? I think this paper might be fodder for a nice discussion! http://arxiv.org/abs/1301.5295 About the Infinite Repetition of Histories in Space Francisco Jos Soler Gil, Manuel Alfonseca (Submitted on 22 Jan 2013 (v1), last revised 23 Jan 2013 (this version, v2)) This paper analyzes two different proposals, one by Ellis and Brundrit, based on classical relativistic cosmology, the other by Garriga and Vilenkin, based on the DH interpretation of quantum mechanics, both of which conclude that, in an infinite universe, planets and living beings must be repeated an infinite number of times. We point to some possible shortcomings in the arguments of these authors. We conclude that the idea of an infinite repetition of histories in space cannot be considered strictly speaking a consequence of current physics and cosmology. Such ideas should be seen rather as examples of {\guillemotleft}ironic science{\guillemotright} in the terminology of John Horgan. -- Onward! 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