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originally posted by: MichiganSwampBuck
My only point from earlier (the tree in the forest) is that a physical cause creates a physical sound wave, regardless if anything can hear it. If some living organism "hears" it, what they hear is a "noise". A noise is the product of an organism's nervous (or other) system responding to a stimulus. A sensory organ, like an ear, picks up the physical sound wave, transmits this to the brain and creates a neural pattern that we call "noise". Sound is an objective physical reality independent of the concept of noise inside the human brain.
What we think we know doesn't alter anything in the elsewhere.
originally posted by: MichiganSwampBuck
So if you can't observe something, or sense it in some way, it doesn't exist?
As Pais indicated, the majority view of the quantum mechanics community then and arguably to this day is that existence in the absence of an observer is at best a conjecture, a conclusion that can neither be proven nor disproven.
originally posted by: delbertlarson
originally posted by: MichiganSwampBuck
My only point from earlier (the tree in the forest) is that a physical cause creates a physical sound wave, regardless if anything can hear it. If some living organism "hears" it, what they hear is a "noise". A noise is the product of an organism's nervous (or other) system responding to a stimulus. A sensory organ, like an ear, picks up the physical sound wave, transmits this to the brain and creates a neural pattern that we call "noise". Sound is an objective physical reality independent of the concept of noise inside the human brain.
What we think we know doesn't alter anything in the elsewhere.
Your point is valid only if an underlying reality is assumed. The problem being addressed with the Nobel winning work is that if relativity and quantum mechanics are both assumed, then what happens in certain experiments is that a physically extended wave function must convert (collapse) into a different wave function in a way that violates the speed of light limit given by relativity.
What is done is a quantum state is produced containing two "particles" in an "entangled state". For a simple teaching example, consider a two-photon decay from a spin zero atom decaying into another spin zero state. The photons fly off back to back from each other. Their spins must be the opposite of each other to maintain zero total angular momentum, but quantum mechanics teaches us that nothing is exact. In quantum mechanics there is always a spread of results possible. Despite the spreads, when one photon is measured, the other one is always measured with the opposite spin. Including the underlying spreads, calculations show that this correlation must involve an effect on one photon that is caused by the measurement of the other. But timing of the measurements can be done in such a way that the two measurements are done so quickly, and so far apart, that the second measurement would experience that the first happened even though it would take light too long to get from one to the other.
When such experiments were done, the fundamental result can be summarized as:
1) Relativity. 2) Quantum Mechanics. 3) Local Reality.
Pick Two.
Both relativity and quantum mechanics have been tested to be correct over the course of decades of experiments. As a result, present dogma dictates that reality be set aside. However, as I mentioned in a comment above in this thread, we can instead set relativity aside. The precursor to special relativity, the Lorentz Aether Theory, results in the same equations as the special theory. I've recently produced a replacement for the general theory also, motivated in part by the need to retain realism in physics.
But if we go with present dogma, wherein reality is set aside, then it becomes the measurement itself that defines the state we are in. And in one variant of such dogma, there is a role of "an observer", someone who makes the measurement. In that dogmatic varaiant the question of whether or not a falling tree always makes a sound becomes worthy of pondering, and your simple decree falls into question.
As for me, I believe a falling tree always makes a sound, because I believe in a single reality and I accept an underlying reality as a starting axiom. I hope this explanation clarifies the discussion a bit more. Many bright people disagree with us realists, and their reasoning is sound - provided they are unwilling to move beyond an axiomatic acceptance of relativity.
Relativity needs to be set aside.
originally posted by: delbertlarson
a reply to: Asmodeus3
My alternative to General Relativity is a theory wherein light is a wave within the aether. The aether is a solid substance, and it is well known that solid substances are capable of supporting transversely polarized waves, such as light. It is possible the aether itself could move, and with the speed of light fixed with respect to the aether, that would result in the speed of light changing as measured by us. While I did consider that issue, it is not one of the critical ones. The critical issues were dealing with all classical tests of General Relativity as well as arriving at some predictable differences. Everything is in good shape on those points I believe.
The theory does other nice things as well, such as deriving the Lorentz Force Equation, having a unified underpinning of electricity and magnetism and gravity, and explaining the origin and location of dark matter. And an aetherial replacement for relativity also allows us to return to the classical understanding of time and space, which is the point of relevance to this thread. Because once we have classical time we have well-defined simultaneity and well-defined instants of time. So we can have an instantaneous collapse of the entangled wave function over its entire length, and then the Nobel winning results become completely compatible with an underlying reality.
originally posted by: Asmodeus3
What is the mathematical framework of this theory?
In general relativity for example we use differential geometry and objects called tensor fields defined on pseudo-Riemannian manifolds.
There is a 'slightly' different approach once we modify Einstein's Field Equations, getting what is now called modified theories of gravity in which you may not even need dark matter or dark energy.
Do you have any paper with the mathematics of the Aetherian framework?