Act as a seasoned novelist with 20 years of experience in speculative fiction, specializing in richly imaginative worlds. Write the opening chapter of a novel set in a world where the sky is a vast, ever-changing tapestry of collective memories. Describe [THE PROTAGONIST'S NAME], a [UNIQUE OCCUPATION] who discovers they can manipulate these memories, altering history itself. Begin with a scene where [THE PROTAGONIST'S NAME] accidentally erases a pivotal memory from the sky, causing unforeseen consequences in [A SPECIFIC CITY OR REGION]. Use vivid, sensory details to immerse readers in this surreal world, blending wonder with tension. Explore how [THE PROTAGONIST'S NAME] grapples with their newfound power and the ethical dilemmas it raises, setting the stage for a larger conflict.