Arthur got terribly excited. This was exactly the sort of thing he’d been promised in the brochure. Here was a man who seemed to be moving through some kind of Escher space saying really profound things about all sorts of stuff. It was unnerving, though. The man was now stepping from pole to ground, from ground to pole, from pole to pole, from pole to horizon and back: he was making complete nonsense of Arthur’s spatial universe. “Please stop!” Arthur said, suddenly.
