Physicist: Unfortunately, there’s no such thing as a “proof” in the physical sciences. The best you can do is a disproof. At the end of the day science is more about “what works” than it is about “what’s real”.
Worse than that, you’ll find frequently that reasonable questions will have no answer, or will have several (but indistinguishable) answers. For example, you could ask a question like “What’s happening over there right now?” But relativity shows that any question involving “now” makes no sense, or at least needs to be rephrased.
Also for example: Light can be polarized linearly (regular up-down or left-right), or it can be polarized circularly (clockwise or counter-clockwise). Circularly polarized light can be described in terms of linear polarization, and linearly polarized light can be described in terms of circular polarization. So which type of polarization is the true type? There may be an answer, but there is provably no way to ever find out.