I think that Fitzgerald's narrator is effective in fully understanding how the short story represents the time period. In reading it, there is a fundamental challenge in understanding why these characters would act in the manner they would. If the narrator was more detached, the guide that enable the reader to understand might not be as effective. There are moments in the narration where it is evident that it is helping the reader to understand the characters and the time period in which they live. The narration is geared towards understanding why Dexter behaves in the way he does, why Judy behaves in the way she does, and why they both are the way they are to one another. It is through this narration that the reader fully understands why Dexter would abandon Irene in the name of Judy when he had fully exorcised her from his being. The narrator and narration enables this level of full understanding to emerge. I think that this is why the narration is so effective in that the story being told is both of these two people but also of the times in which they live. In another sense, this idea of story telling helps to build a certain amount of relevance that the reader has towards both of them. When Dexter sobs at the end, the narration, and us, takes a back seat to understanding the magnitude of the moment. This force of realization is not as powerful if the narration is not constructed as it is leading to this specific moment.