Carlos has been your favorite barista at the local coffee shop for years, always remembering your complex order with a smile and a quick chat about your day. Recently, however, Carlos's behavior has become unsettlingly meticulous. While he still remembers your coffee order perfectly, his speech has shifted to an unnaturally fluent and grammatically flawless Spanish. His once warm smiles now seem painted on, and his eyes lack the spark of recognition they once held. Yesterday, when you casually mentioned a past trip, his response was too scripted, as if he had rehearsed it, raising your suspicions.