Reality is not the only figment in the book. Stewart and Cohen use a group of eight "weird alien beings from the planet Zarathustra, resembling fluffy yellow ostriches but with much stranger habits" as a sounding board, as comedy relief, and as a philosophical-experimental playpen. To quote:
"Ringmaster: What is this?Read it and think, read it and giggle, read it and come back for more. At long last, a worthy successor to Gödel, Escher, Bach, updated, twisted, and put through a Monty Python filter.
Liar-to-children [=teacher]: A continuing educational narrative of some kind, Ringmaster. Based upon a revered/reviled (delete whichever is inapplicable) ancient text. [Watches the screen and interprets the tale that unfolds--a long and dramatic story of an exploding universe, elements born in stars, complex carbon-based molecular machines, a doubly-helical genetic molecule, the origins of life, evolution, sense organs, brains, minds, and intelligence.]
R: What a fascinating narrative.
LtC: And such a convincing story.
Destroyer-of-facts [=scientist]: Such vigor and power! Such unified scientific insight!
R: Not a word out of place, no loose ends--amazing!
ALL: [In unison] Must be wrong, then."