* Flashback: The novel is told in flashback, with Gene recollecting his memories of Devon School and his relationship with Finny. This narrative technique allows Gene to explore the events of the past in depth and to provide insight into the motivations of the characters.
* Symbolism: The novel uses a variety of symbols to represent the characters and their relationships. For example, the tree that Finny falls from is a symbol of their friendship; the river is a symbol of change; and the war is a symbol of the destructive forces that can threaten even the strongest relationships.
* Irony: The novel uses irony to create tension and suspense. For example, the fact that Gene is ultimately responsible for Finny's fall is ironic, since he is the one who wants to protect him; and the fact that Finny's death is caused by a freak accident is ironic, since he is such a physically fit and healthy person.
* Point of View: The novel is told from the first-person point of view of Gene. This limited point of view allows the reader to experience the events of the novel through Gene's eyes and to understand his thoughts and feelings. However, it also means that the reader is limited to Gene's perspective on events and may not have access to the full truth.
* Themes: The novel explores a variety of themes, including friendship, loyalty, betrayal, guilt, and the destructive power of war. These themes are explored through the relationship between Gene and Finny, and they provide insight into the human condition.