[cxr]

You're dug in, but none of this is what the linked paper is about (perversely).

It's about students who are literally unable to parse sentence structure and grasp what's being described in a scene—ones who think that Michaelmas Term is the name of a character and that the image of a hypothetical Megolasaurus walking up the street is an actual dinosaur in the scene.

Try reading the paper linked here to see what the discussion is about, rather than (as the authors of the paper criticize) just guessing at what they should have meant.