You describe a local hidden variable theory such as has been definitively ruled out by Bell/CHSH inequality experiments (see, e.g. (2022 Nobel Prize)[https://ww

You describe a local hidden variable theory such as has been definitively ruled out by Bell/CHSH inequality experiments (see, e.g. (2022 Nobel Prize)[https://www.nobelprize.org/all-nobel-prizes-2022/ https://www.nobelprize.org/all-nobel-prizes-2022/] ). But even if you could make some baroque version of a model like this (with the position of one ball instantaneously reacting to other far away balls perhaps and some pilot waves) invoking it still wouldn’t answer my question about ontology. Implicit in this description seems to be the existence of a separate non-quantum realm (little balls that spin, jostled by “wind”). What are these balls supposed to be made of? If not atoms (since atoms are stable by virtue of quantum mechanics, which you seek to explain), then why don’t they suffer from ultraviolet catastrophes? Hopefully you see my point.