How does the unreliable narrator in "The Great Gatsby" shape readers' perceptions of the American Dream?

F. Scott Fitzgerald's novel "The Great Gatsby" is widely considered a quintessential examination of the American Dream, yet its narrative structure complicates a straightforward reading of this theme. Told from the perspective of Nick Carraway, whose reliability as a narrator is questionable, the story prompts readers to constantly re-evaluate what they know about the elusive Jay Gatsby and the era's societal values. Nick’s biases, selective memory, and possible moral judgments color every aspect of the story, from character interactions to the romanticized depiction of the opulent lifestyles of 1920s America. This poses an intriguing question: how do Nick's subjective accounts influence our understanding of the American Dream, and what does this say about the nature of perception and truth in literature?