Well, what about some kind of (private) program that runs on top of your set of goggles, and would tell you that your set of goggles that you frequent happens t

Well, what about some kind of (private) program that runs on top of your set of goggles, and would tell you that your set of goggles that you frequent happens to slice and dice only tiny of the entire dataset and thus will hint to you that you're peering into holes. I think this paper is great in delivering a first solution to this space. Sure it's not perfect but atleast miles better than an opaque box.