what makes an author unreliable
In sum whether a narrator is called unreliable or not does not depend on the distance between the norms and values of the narrator and those of the implied author but between the distance that separates the narrator's view of the world from the reader's world-model and standards of normality.ayne C. Booth was the earliest who formulated a reader-centered approach to unreliable narration and distinguished between a reliable and unreliable narrator on the grounds of whether the narrator's speech violates or conforms with general norms and values.