 The tone of the story, especially towards its end, is delivered very simplistically, in an almost child-like fashion.  This is to show that the story
But something soft had cushioned the impact—something which had come into being just for the moment and then abruptly passed into non-being again, something which was as impalpable as air. There had been a revolt—again a term without any real meaning, a term that could have no reality outside of the reading machine—and the elders were overthrown. True, this was the only case of its kind, the exception to the rule, but it proved the world was not perfect. Now if the world had walked from—somewhere, through the vast star-speckled darkness and to the great garden outside, this also was purposeful.
 is like a fable.  It offers a moral to the story and teaches a truth about society.
 is like a fable.  It offers a moral to the story and teaches a truth about society.  is like a fairy-tale because the characters go on a magical journey, but its main purpose as a story is to decieve.  is like a ghost story.  It frightens the reader by playing on the dark and supernatural.  is like mythology because it is folklore that explains society's origins.