I know what you mean, and I worried about that when I posted those examples. The problem is that I can't tell if I'm suffering from the hindsight bias when I'm trying to evaluate "Could I believe both this statement and its inverse, regardless of which one was presented as the truth?" In these cases, I can come up with fake rationalisations for both (even though one is more counter-intuitive), which makes me think that they might be invertible. They would need to be tested on people in experiments like the ones in the article by Meyers.