The entire narrative of "Paper Lives" is built around its devastating final twist: the boy, Ali, is not real. He is a psychological projection of Mehmet himself as a child. The truth is that Mehmet's own mother abandoned him in a garbage sack to escape his abusive stepfather. The trauma of this event, combined with his terminal illness, causes Mehmet to completely dissociate, creating Ali as a way to confront and relive his past in an attempt to change its outcome.
This revelation reframes every interaction in the film. When Mehmet vows to protect Ali and reunite him with his mother, he is acting out his own deepest desires. Ali's fear, his injuries, and his emotional outbursts are all manifestations of Mehmet's repressed memories. Scenes that appear to be about Mehmet's altruism are revealed to be conversations with himself. His friends, Gonzales and Tahsin, are not ignoring Ali; they genuinely cannot see him. Their concerned glances and hushed conversations are about Mehmet's deteriorating mental state, which they have witnessed before. Gonzales's closing narration confirms this, stating, "He wasn't able to tell imagination from reality." The film is not about saving a lost boy, but about a man so broken by his past that he is lost within himself, unable to escape the memory of the abandoned child he once was.