Compose a short story (approx. 500 words) set in a dystopian cyberpunk metropolis. The narrative style must strictly emulate Ernest Hemingway's 'Iceberg Theory'—use simple, declarative sentences, focus on objective descriptions rather than internal monologue, and rely on subtext to convey the protagonist's existential dread. The protagonist should be an android mechanic discovering a memory chip that contradicts their programmed reality.