If nothing interacts with it, does it exist?
Not “unknown”. Not “unobserved”.
I mean: no interaction at all.
Because in experiments, nothing happens inside a system on its own.
Events only appear when something meets something else.
So maybe this is the real question:
Is existence something things have—
or something that only appears when things interact?
What if, regardless of whether something interacts or not, there is still an observer of it?
In that case, the question is no longer “does it interact?”, but “what makes it observable in the first place?”
I actually came across a paper that presents experimental evidence for the existence of such an observer.
If you’re interested, here it is: https://www.researchgate.net/publication/393397861_Experimental_Evidence_of_Nonlocal_EEG-Quantum_State_Correlations_A_Novel_Empirical_Approach_to_the_Hard_Problem_of_Consciousness