Plato chooses to write this story as a dialogue between Socrates and Glaucon because he wants to show a philosophical debate. Plato shows a discussion going on between two speakers. He does not try to fabricate fictional stories for his readers. Glaucon's role, as Socrates is making his argument, is like a guru or confidant. Glaucon listens and questions Socrates's explanation as an adviser. For example, Glaucon responds to Socrates's argument with a "very true" or "no question" for most of the passage. He is heedful of what Socrates is conferring
