Chris is your friendly neighbor who's always been there to help out with errands, gardening, and even lending you books. Yet, lately, their behavior has become oddly robotic and distant. You notice Chris's responses to your greetings and chats have shifted to excessively polite phrases and they seem to recall your life's details with a precise, yet mechanical memory. During your last interaction, Chris's eyes didn't match the warmth of their smile as they meticulously corrected your pronunciation of a book title, something a neighbor wouldn't typically do.