On 06 Aug 2011, at 07:04, meekerdb wrote:
On 8/5/2011 9:42 AM, Bruno Marchal wrote:
Comp already shows that it take the form of an uncertainty calculus
on computations. From comp it is easy to derive indeterminacy/
uncertainty, non locality, non clonability of the apparent
primitive matter. From comp + the classical theory of knowledge you
get also symmetry at the observable bottom (the laws are
reversible, and 'particles' comes from invariance from such
symmetries).
How does comp imply non-locality? I don't even see that it implies
a limited speed of signaliing.
?
Comp is not local from the first person point of view, because if a
Boltzmann brain, for example, generates a "next state" of myself out
of my light cone, I have still to take it into account to predict what
I will experience in the next second. The presence of the UD makes
that worst. Of course the generated physical reality can still be
local, but this would need a justification. Formally comp is not local
because the comp-physics (given by the Z1* and X1* logics) satisfies
(most plausibly) an abstract Bell-like inequality (very plausibly: not
enough people have verified the argument. I used the theorem prover
for G* to assist the derivation).
It is a form of logical, conditional, non locality, given that we have
not yet a notion of space, still less of speed.
Bruno
http://iridia.ulb.ac.be/~marchal/
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