Shawn thinks that his father wants to kill him based on a television show his father was watching and the reactions of his father to Shawn's illness. Shawn doesn't know for sure, and neither does the reader at the end of the story. This uncertainty represents the lack of communication between Shawn and his father and is the main conflict in the story. Shawn has to guess what his father is thinking, and his father has to do the same thing. Shawn is unable to communicate with his father, and his father doesn't even try to communicate with Shawn because he thinks Shawn can't understand what the father is saying. This all points to the theme that no one has the right to choose life or death for another person. At the end of the story, we are left wondering along with Shawn whether his dad will kill him.