We only know what we can measure. We don’t really know what an atomic nucleus looks like, for example. We can only measure what happens when another particle hits it. Between measurements, it might not even be real. We don’t even know what measurement is.
Pick your favorite quantum interpretation: Copenhagen, Broglie–Bohm, Many Worlds. We’ll probably never know the truth.
We only know what we can measure. We don’t really know what an atomic nucleus looks like, for example. We can only measure what happens when another particle hits it. Between measurements, it might not even be real. We don’t even know what measurement is.
Pick your favorite quantum interpretation: Copenhagen, Broglie–Bohm, Many Worlds. We’ll probably never know the truth.