So what? The IDEAS produced can't be measured. They exist, and yet do not exist. And that's ALL of them, not just some of them. The results transcend the physics that generate them. "Existence", itself, is a metaphysical, ideological, conceptual cognitive phenomenon. Like "God", or "beauty", or "love", or "justice", or "infinity", or "equality", or ... the list goes on.
I still don't see why you think this comment is even relevant to this discussion. Some objects I can pass through, some I cannot. So what? Is a brick wall more "real" than fog?