Final answer:
O'Brien likely includes detailed personal experiences, like being a pig declotter, to present a contrast to his war experiences, increase authenticity, and highlight the character's development while building tension to support the narrative's conflict.
Step-by-step explanation:
The question seems to pertain to the literature analysis or understanding why an author includes specific details or experiences within their narrative. While not specifically identifying the text in question, the reference to O'Brien could indicate a discussion of Tim O'Brien's work, perhaps "The Things They Carried." If this is the case, O'Brien relates his experiences, such as being a pig declotter, to provide a stark contrast between his past life and his experiences in the Vietnam War, highlighting the innocence lost and the harsh reality faced during the war. Such specific details contribute to the authenticity of the story, allowing readers to engage more deeply with the narrative and understand the complexities of his character's development. Building tension with these details also supports the conflict within the story, illustrating internal and external struggles.