It's an interesting question, and it remains an open question at this time.
‘Metaphysical Experiments’ Probe Our Hidden Assumptions About Reality
- Thread starter Hume
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Again, mental phenomena is testing to seven sigma. We can't deny what science is finding out about the human mind.
sorry, seriously, I can't deal with your mental illness anymore
You Kant deal with any philosophical exchange.
You are mentally ill.
T. A. Gardner
Thread Killer
Gravity is for all intents, instantaneous.
Okay, and how does that refute Bell's theorem?
T. A. Gardner
Thread Killer
For Bell, the basics are locality (the belief that things can’t influence each other instantaneously across space)
From the OP.
Gravity is instantaneous and influences things across space. If you were to convert a large amount of energy to mass you get lots of gravity and it affects everything around it across space. That refutes his idea of locality.
I see. Bell is refuting the idea of locality. Sorry, a bit confusing. He is saying the basic principles he is contesting is locality.
"This meant that locality and realism can’t both be features of reality —"
‘Metaphysical Experiments’ Test Hidden Assumptions About Reality | Quanta Magazine
Experiments that test physics and philosophy “as a single whole” may be our only route to surefire knowledge about the universe.
www.quantamagazine.org
The gravitational field is felt everywhere in space, but if the source of gravity were removed, it's effect wouldn't be instantaneous everywhere. If the sun suddenly disappeared, the Earth would continue it's elliptical orbit for several minutes, before momentum carried it off in a ~ straight line. Information cannot travel faster than light
T. A. Gardner
Thread Killer
But that's not due to gravity, that's due to momentum / inertia and centripetal force.
"realism (that there’s some way things simply are, independent of their being measured)
www.quantamagazine.org
A common belief by scientists, even there is no proof.
‘Metaphysical Experiments’ Test Hidden Assumptions About Reality | Quanta Magazine
Experiments that test physics and philosophy “as a single whole” may be our only route to surefire knowledge about the universe.
www.quantamagazine.org
A common belief by scientists, even there is no proof.
Right, mass exerts a predictable deformation on spacetime, but does not propagate at infinite velocity. Gravity, gravitons, and gravitational waves are either assumed or experimentally determined to propagate at the speed of light.
T. A. Gardner
Thread Killer
The key word there is assumed. We really don't know enough about how gravity actually works and is generated to know that for sure--yet.
The speed of gravitational waves has been experimentally determined to be approximately the speed of light.
I didn't read the article, but any particle in the presence of in a gravitational field, or an electrical field, or a magnetic field is going to feel it instantaneously. I don't know why that even has to be pointed out.
Article talks about gravity a few places.
"Brukner laments that the implications of experimental metaphysics haven’t yet been fully incorporated into the rest of physics at large — especially, in his view, to the detriment of research on the quantum nature of gravity. “This is really a pity, because we end up with wrong pictures of, say, how the vacuum looks, or what goes on in a black hole, where they are described without any reference to modes of observation,” he said. “I don’t think that we will make significant progress in these fields until we really do much work on the theory of measurement.”
I guess I don't understand exactly how metaphysics is supposed to help in the search for a theory of quantum gravity.
The article has almost nothing to do with gravity.