A story, or not A story?

In Li-Young Li's "A Story", the author uses foreshadowing and irony to develop the tension of the story, that the father cannot think of a new story for his young son, and doen't want to dissapoint him. The use of Irony in the story begins in the second stanza, when the poem says "In a room full of books, in a world full of stories, he can recall not one...". The ironic fact that the father cannot think of a single story, and doesn't want to dissapoint the boy by not having a story, while in a rooms full of stories he could tell, supports the tension because the father would feel like dissapointing the boy if he were to look for a new story. Foreshadowing is used because of the father's dread of not being able to think of a story, imagining "the day this boy will go. Hear the alligator story! the angel story once more! You love the spider story. you laugh at the spider. let me tell it! But the boy is packing his shirts". The father dreads that his dissapointment will make the boy grow up faster and leave him. The father doesn't want in any way to dissapoint his young son with a repeated story, or to have to look for a story, and so he finishes at a stalemate, being unable to think of one.