Cats are (almost) liquid

The overhead view of figure 3 in particular is noteworthy to me. The 3 human subjects are represented as abstract ovals, and the cat drawn as a cat who is staring up as if to look through the fourth ceiling at the reader.

The reader becomes, in a sense, a greeble.

This paper would have been a fun project for a scientific illustrator.

For reference, in the cat realm a greeble is what cats are looking at when they stare up at the ceiling or wall and there is nothing there. At least that you can see.

So instead of the real cat staring at the imaginary greeble, we the reader are the real greeble staring at the imaginary cat. Who is staring back because it can see us.