In "Cat's Eye," Margaret Atwood delves into a profound theme of identity and self-perception through the protagonist's thoughts. She expresses a belief that, despite appearing to be an adult like her peers, she feels out of place, as if she is just pretending to fit in. This reflects a deep-seated insecurity and a struggle with adult responsibilities and societal expectations.

This sense of being a “disguise” resonates with many readers who have experienced similar feelings of alienation. Atwood's exploration of the complexities of growing up and the internal conflicts that accompany it highlights the universal challenge of reconciling one's true self with the roles imposed by society.