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Mentz114 said:(my emphasis)
Do you mean through non-locality ?
What makes photon detectors click is correlations between probability amplitudes that happen right at the detector. These correlations could have been present after preparation - or is that just another NLHV theory ?
In the emphasized text, I thought I was paraphrasing your phrase:
In the real world there is dissipation, non-unitary evolution, absence of superposition and other noise that let's the outcome be decided by the current state of the universe.
I thought you were saying that the outcome of a measurement is actually deterministic, depending on details of the current state of the universe. That would seem to be in violation of Bell's Inequality, unless
(1) the details affected the measurement outcomes through FTL means (nonlocality), or
(2) the details affected not only the measurement outcome, but also which measurement was made (superdeterminism).
(Those are the two loopholes to Bell's proof that I know of.)
I'm making an assumption here that the "current state of the universe" would count as a "hidden variable" in the sense of Bell.
[Stephen, do you have a ref to the post where you did the work referred to by jilanq?]
I don't remember the post, but my observation was that amplitudes for quantum mechanics work very much like probabilities for classical stochastic processes. I reconstructed my little essay about this here:
https://www.physicsforums.com/threads/amplitudes-probabilities-and-epr.895519/