On 6/24/2018 8:17 AM, Bruno Marchal wrote:
I agree. To change QM, and getting the correct spin measurement in
all directions, you would need to de-linearise slightly the SWE, but
this makes the many worlds able to interact (Weinberg showed this,
and Plaga in this list a long time ago). Problem: it makes
thermodynamical laws wrong. Well, it makes almost all physical laws
wrong).
"Wrong" comes in degrees.
The Löbian machine agrees with you, like f, []f, [][]f, [][][]f, ….
There are big lies and small lies in the machine’s mind.
QM made all physical laws wrong at the time.
Not really. QM on the contrary consolidate them in their scale on more
solid base. QM made only the metaphysical interpretation of those
theories wrong.
I take your point that where classical physics saved the phenomenon so
did QM. But QM did more than that; for example it showed why atoms were
stable and had discrete emission spectra.
The same can be said with computationalism: it should (and seems to
give) a very solid base of the quantum physical laws, with much less
ontological requirement.
GR made Newtonian gravity and spacetime wrong.
I would not say that. It shows them to be approximation. That’s the
advantage for Platonism: it bets at the start that what we see is not
the real thing, but approximation due to our finite abilities.
It shows Newtonian gravity is an approximation in a certain domain (the
weak field limit). But it's not even approximately right for a black
hole. The possibility of gravitational waves or a wormhole is a
fundamental difference, as is the idea of a dynamic geometry.
Brent
So if we reconcile our theories of spacetime and quantum fields the
result will likely be a theory that makes "all physical laws wrong”.
Yes, as the physical laws have to be deduced from simpler ideas, and
with Mechanism, the physicals arise from the unique measure on
computational histories that we must extracted from a logic of bet on
sigma_1 sentences, which we get with the adjunction of the consistency
condition (<>t).
Bruno
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