This narrative technique greatly serves to emphasise the message or theme of this story. We slowly begin to work out the many clues that there are (such as the names John gives things like "god roads" and what the sign "ASHING" rally said) and realise that this story is set in a post-nuclear war world which has been decimated, and the inhabitants have sunk back into the dark ages. John and his tribe describe a primitive world with many threats and mysteries that they do not fully understand. However, during the course of his journey and the vision that he has in "the high towers of the gods" John reflects the moral of the story: "Perhaps, in the old days, they ate knowledge too fast."
This then is the brutal thematic warning that the story gives: we live in an era of unprecedented scientific discovery, yet we risk discovering too much truth too quickly, and opening some terrible Pandora's Box or using scientific advances before we fully understand their consequences. One only has to look at the press today and issues such as stem cell research, the human genome research project and cloning to see that the danger is still here and Benet's short story is still just as applicable in today's society. Of course, the tale is an open one,