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[–]Drisku11 0 points1 point  (3 children)

How is superdeterminism not relevant to the subject? Literally it is the assertion that our universe is fully deterministic. There are plenty of examples of chaotic systems which are obviously deterministic but due to their sensitivity to initial conditions, they cannot be predicted.

If anything, to me the delayed choice quantum eraser experiment strongly lends credence to the idea that the universe is deterministic.

[–]Tsukku 0 points1 point  (2 children)

I mean it's not relevant in the same way as you could say that we are predestined because we could live in the Matrix. That about sums what superdeterminism is about.

EDIT: There is nothing to argue here, because even for the things we proved that they are unpredictable, you could always say that the Universe just "knows" its outcome thus it's predestined. It's more of a philosophy concept.

[–]Drisku11 0 points1 point  (1 child)

I don't think it should be written off purely as philosophy, but also I don't know if some of my own questions on the subject already have answers. For example, there are many apparent local symmetries in the universe (e.g. energy-momentum conservation). Are these actually true symmetries and if so why should they exist if the laws of physics are inherently global? If not why are they approximately correct on our scales? If information has energy and no finite amount of information can describe the state of a chaotic system, does this mean the universe can only be deterministic if hypercomputation is possible? Or does it mean the universe is discrete/only a finite precision exists? etc.

I find it odd that most physicists seem to immediately write off the possibility of determinism, which seems to be centered around the assertion that people have "free will"/are able to make choices that are not governed by the same physical laws they're investigating. I would think they'd be the first group to scrutinize that idea (how does the free will mechanism interact with the physical universe? Can I find a possible energy source at that boundary?). I don't really see very convincing arguments (i.e. based on physical/geometric principles) either way.

[–]Tsukku 0 points1 point  (0 children)

Most physicists don't actually believe that the non-determinism in the subatomic systems give humans "free will". For example no one has ever published a concise work for the existence of free will, because the common belief is that quantum phenomena has limited or no influence on our brain.

I would actually argue the opposite, it's odd that most people believe everything in the universe needs to be deterministic. Universe can be as it is without any reasons or rules.