Rhinos are prey to all sorts of Ideas and Concepts, none of which seem to have a known source. When We are distracted, as Rhinos often are, these Obscurities creep up and jump into our heads.
These are Subliminal Thoughts and Impressions, coming from wherever they come from, and staying as long as they like. We may not even know they are in there, exerting their influence.
It is small wonder that Rhinos are sometimes taken aback by our own special Logic. Golly.