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This question was very interesting to a non physicists like me question (I am computer scientist and I work with "pure random" crypto hardware that uses quantum phenomena) Obviously string theory was not the answer. But is there any hope of explaining why phenomena that we see today es purely random, is explained in a deterministic manner if other dimensions or unknown variables so far come into play? or it is known that this will never happen and the randomness is random not because we ignore some other variables?

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    $\begingroup$ https://en.wikipedia.org/wiki/Hidden-variable_theory $\endgroup$
    – J. Delaney
    Feb 17, 2022 at 17:16
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    $\begingroup$ Are you asking about randomness in general or in quantum mechanics? $\endgroup$
    – d_b
    Feb 17, 2022 at 17:17
  • $\begingroup$ I guess in quantum mechanics, ( of course it would be also interesting to know if the cosmos could be deterministic and it just has a a very big amount of variables). Acoording to the link of hidden variables " Bell's theorem would later suggest that local hidden variables (a way for finding a complete description of reality) of certain types are impossible" So, it is proven that the cosmos can't be deterministic? Or is it an open question? $\endgroup$
    – Sfp
    Feb 17, 2022 at 17:25
  • $\begingroup$ The universe isnt deterministic. $\endgroup$
    – Jun Seo-He
    Feb 17, 2022 at 17:26
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    $\begingroup$ @JunSeo-He We believe the standard model (in it's current form at least) does not explain everything so the question of determinism (and all variations on that) is still open. Certainly there are many very clever people working on developing theories with refinements to e.g. hidden variables. $\endgroup$
    – StephenG - Help Ukraine
    Feb 17, 2022 at 18:52

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