But sometimes, late at night, when the Mac is sleeping and the room is dark, the fans spin up for just a second. No apps open. No updates running. And Leo swears he sees a brief flash on the screen—a gray folder, blinking a question mark.
> Transfer complete. User 4371_Leo_edits. Thank you for choosing Sierra. Would you like to optimize system performance? (Y/N)
Leo laughed nervously. Trolls. Obviously.