Haircut by Ring Lardner- What is the literary theme/central theme, thesis

Because you will focus on specific elements of a story, a literary analysis requires a strong thesis or focus statement. You can arrive at this statement by asking yourself a question. For example, if you were reading Poe, the question could be: How does Poe use setting and point of view to create meaning in "The Cask of Amontillado"? You could then write a thesis statement focusing on the setting and point of view that Poe uses to develop the central theme of the story based on your interpretation. Thesis statement must include title, author, subject (of essay)-opinion about the subject-and roadmap that forecasts organization."In ‘The Cask of Amontillado' Poe develops his theme of revenge through setting and point of view."