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> With hidden variables—which by all accounts haven’t been ruled out—it means we cannot do this. Local hidden variables have been ruled out. So it's not really
by guerrilla 4y ago
> With hidden variables—which by all accounts haven’t been ruled out—it means we cannot do this.
Local hidden variables have been ruled out. So it's not really like chaotic systems at all, whose development is internal.
- nobodyandproud 4y agoNon-local hidden variables have not.
- guerrilla 4y agoSo it's not really like chaotic systems at all, whose development is internal.
- nobodyandproud 4y agoCan you explain why non-locality means non internal?
- phkahler 4y agoIf the entire universe is one system, nonlocality seems inherent. Why physicists are happy to embrace weird interpretations and not nonlocality is beyond me. It seems like an arbitrary choice to me, or even a poor choice.
- shadowgovt 4y agoThe development of a fractal isn't internal. Its shape is completely predetermined by its mathematical description. I think what the author is trying to say is that we could imagine the universe is a massively hyper-dimensional fractal that we are utterly hopeless to determine the initial starting point on. I can't immediately see a reason that model wouldn't work, but its descriptive power (relative to QM) is basically nil... To be consistent with the observations that demanded a quantum mechanical understanding of the universe, we have to introduce the idea that we can't know where we are on the fractal, so this is more a philosophical pondering than a physical one.
- sampo 4y ago> Local hidden variables have been ruled out. Superdeterminism is a local hidden variable theory, that has not been ruled out. Superdeterminism circumvents the Bell's theorem, by extending determinism not only to the things being measured, but also to the entities doing the measurements.
- lmm 4y agoSuperdeterminism isn't really local. It requires assuming that certain physical configurations are impossible for completely nonlocal and unobservable reasons (i.e. it's impossible for you to decide to measure this particle that you received from 1 light year away in this particular way, for reasons that no local measurement could ever possibly tell you - defenders will argue that it's "local" because those reasons were created when the particle was and came along with it when it was sent to you, but that's a fundamentally unphysical way of thinking).
- throwawaymaths 4y agoI think it's detractors that argue that it's local, because that forces it to be impossible as per bells theorem.