What is the exposition of the cathedral story?

The exposition of the cathedral story, often referring to Raymond Carver's short story "Cathedral," introduces the main character, an unnamed narrator who is initially cynical and emotionally distant. He lives a mundane life with his wife, who has a connection to a blind man named Robert, leading to feelings of jealousy and apprehension in the narrator. This setup establishes the narrator's inner conflict and sets the stage for the transformative experience he will undergo when he interacts with Robert. The story explores themes of perception, connection, and the nature of understanding.