On 01 Feb 2013, at 16:42, Roger Clough wrote:
Hi Bruno Marchal
I would think that each universe provides its own distinctive
context to any calculation, including comp.
Comp is the assumption that we are Turing emulable.
That notion is made very solid by Church's thesis.
So I
wonder why you seem to endorse (or at least don't deny) a multiverse.
Of course the term multiverse is slightly ambiguous. but with comp the
machine's dreams, or the finite piece of machine dreams, exists, in
the same sense that 17 exists, and our consciousness is related to the
infinity of computations supporting us. All this is orchestred by the
arithmetical truth, which is the simplest, yet highly non trivial,
type of reality we can conceive.
I buy one of the main point of this list, which is that everything, or
nothing, made precise through some notion of things, is simpler than
any particular things.
Then eventually this led me to find a way to give sense to Plato and
Plotinus. But the Noùs, Platonia, is really big. There are many dreams
(computations rich enough to support a self-aware entity).
Does those dreams cohere enough to get a definite physical reality?
Here, even the formulation of the problem is not yet completed, and
might depend on what we want to put in the word "physical".
Bruno
----- 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 <rclo...@verizon.net>
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
<rclo...@verizon.net> 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,
牋 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!
Stephen
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