On 25 Nov 2013, at 20:08, meekerdb wrote:
On 11/24/2013 2:43 PM, LizR wrote:
On 25 November 2013 10:53, meekerdb <[email protected]> wrote:
That isn't a problem at all. It's just like the arguments about
the existence of god; first you have to define what you mean by
"god" before you can answer whether "god exists" or not. So what is
the definition of "physical reality"? It seems to me that
"physical" only adds the concept of shared/public. But Plato also
intended his reality to be shared and public.
It seems quite hard to pin down exactly what physical means, now
that we can no longer visualise particles as tiny billiard balls. I
think the important point is whether "physical" is fundamental, or
derived from something else. Aristotle would say the former, Plato
the latter.
Why wouldn't the "something else" just be physical too. In my view
"physical" just means "part of our shared experience", stuff we can
define to one another ostensively. If numbers exist they are just
as physical as spacetime or the Higgs field. The interesting thing
to me about Bruon's theory is that he proposes to explain the first
person, not-sharable experiences in terms to proof relations. I
don't think they can be separated from the sharable "physical" part
of the world; but I applaud the effort.
Thanks.
But I agree with you that the sharable part and the non sharable part
cannot be separated. They are dualities, even "octalities" appearing
naturally when universal numbers look inward. The physical plays a
role in consciousness and shared consciousness (dialog). Just that
both consciousness and physical appearances emerges from some simpler
laws, like
Kxy = x
Sxyz = xz(yz)
From this I can understand why numbers or combinators can get
(FPI-)trapped in infinite "very solid dreams", operated by universal
quantum-linear-symmetrical laws.
I don't know if there is a physical universe, but I know that
universal numbers cannot avoid the beliefs in physical universe, and
that they are correct in that belief (!), but wrong to believe them
ontological or primitive. The coupling consciousness/realities is an
arithmetical sort of Galois connection. It generalized the MWI on
arithmetic or on any universal system.
Bruno
Brent
A physicist goes off to a conference. After a week his suit’s
gotten soiled and crumpled, so he goes out to look for a dry
cleaner. Walking down the main street of town, he comes upon a store
with a lot of signs out front. One of them says “Dry Cleaning.” So
he goes in with his dirty suit and asks when he can come back to
pick it up. The mathematician who owns the shop replies, “I’m
terribly sorry, but we don’t do dry cleaning.” “What?” exclaims the
puzzled physicist. “The sign outside says ‘Dry Cleaning’!” “We do
not do anything here,” replies the mathematician. “We only sell
signs!”
--- Alain Connes, in Changeux
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