On 07 Jul 2015, at 01:04, Bruce Kellett wrote:
meekerdb wrote:
On 7/6/2015 10:46 AM, John Clark wrote:
On Mon, Jul 6, 2015 at 1:33 PM, meekerdb <[email protected] <mailto:[email protected]
>> wrote:
If there's only one consciousness which is aware of both
Washington and Moscow then asking the body looking at the
Washington Monument what the Kremlin looks like would elicit an
accurate answer. There's no contradiction in information being
transferred from Moscow to Washington any more than transferring
it from a toe to a brain.
Nobody thinks new physics would be needed to explain how a
message moves from your toe to your brain, but new physics would
be required to explain how the Washington Man could accurately say
what's going on in Moscow without using electronics.
So I don't think the Washington Man could do that.
I didn't say they could, I said there was no *logical*
contradiction in them doing so. In fact it's not even a
nomological contradiction because humans could have evolved or
manufactured RF communication devices in their brains such that,
when duplicated, the two copies continued to shared information.
But my point was that in Bruno's UD multiverse there will be
universes in which this is the case. So to show that duplication
necessarily entails two consciouses, he needs to show that our
physics and our evolution are necessary, not contingent.
Bruno appears to believe that the same physics must obtain in all
possible universes, only initial conditions can differ.
Please. You oversimpilfy.
Quote:
"Only the geographico-historical features can be brute facts. The
whole point is that with comp, physical laws does exist, and are the
same for all universal machine, because they are all under the same
FPI on the same domain (UD*). Physics, unlike geography is justified."
You see? I say that the physical laws have to be the same for all
universal machine. This is neutral on the question of the existence of
one, two, three or infinity (enumerable, not eneumarable, ...) of
physical universes.
I think Bruno is simply wrong here. For the dovetailer in Platonia
(AUDA), every computable universe is included, and these can have
arbitrarily different physics. Cf. Tegmark's CUH.
Exercise: refute the CUH. Hint: UDA.
The "physical" is what make your experience, not just existing, but
stable and "normal" in some gaussian sense. With comp, we can't
exclude other universe so different that we have non counterparts in
it. The fact is that "we" are supported by an infinity of
computations, and the laws of physics are invariant in the way to
manage those infinities.
My only fear, when young, was that this would lead to classical logic,
from which it would have followed that physics does not exist and is
only a form of geography. That would have make comp somehow trivial
about physics. But that is not the case, there is a complex physical
core shared by all universal beings. Now, it is a complex structure,
and depending of its derivation from the intensional nuances, it might
have different phase allowing different kind of "physical reality".
The picture is just very rich, and unlike physicists, we get the
qualia theory extending the quanta. All this from an hypothesis that
almost all scientists believe in (even when not really knowing the
mathematical theory behind).
By testing the quanta part, we can refute or confirm indirectly the
qualia part.
Bruno
Bruce
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