Hi Richard,
Sorry for this late answer.
On 09 Jan 2014, at 20:42, Richard Ruquist wrote:
Bruno Marchal:
You might confuse geography and physics. The (sigma_1) arithmetic is
the same for all, and the laws of physics must be given by the same
laws for any universal machine. Comp makes physics invariant for all
machine-observers, and entirely determined by the unique measure on
all computation, as seen from the 1p view.
Richard Ruquist:
The geography is important.
OK.
Do we drive on a unique geography?
In the 1p plural, yes. But in the 3p wave, no geographies is unique,
they are 2^aleph_0.
Are there some things, some properties like charge, mass and energy
of electrons and photons that are invariant and essentially do not
affect their quantum states. If so, the geography we drive on may be
a constant relative to the scale of drive time. Geography may never
split due to quantum state superposition.
I don't see why. If I decide my holidy location with a quantum
superposition, I will split the geography relatively to me.
Splitting within a constant geography is rather associated with
life, but not photosynthesis.
The photosynthesis process somehow estimates and selects the best
photon quantum state for optimal processing into sugar, which is a
significant constraint on extra worlds in a many world reality.
?
Perhaps that is a metaphor for how the laws of physics may optimize
particle interactions.
But there is no experimental evidence for such optimization outside
of biology.
Bruno
http://iridia.ulb.ac.be/~marchal/
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