How does David Macaulay use imagery in Motel of the Mysteries?

Imagery:

"Swept up in the Euphoria of the moment, Carson placed the collar over a delighted Harriet's head, moved in front of the largest spotlight in the gallery, and did what is still believed to be his very best shadow rabbit ever."

"The clustering of hundreds of monumental inscriptions mounted on huge poles along both sides of a highway was quite common. Each inscription represented a different religious sect or point of view and was placed as near as possible to heaven."