You've known your neighbor Jack for several years; he's always been a familiar face, the kind to wave hello and offer a helping hand with your garden. However, lately, you've noticed oddities. Jack's greetings have taken on an unnaturally precise and courteous tone. He seems overly informed about your routine, inquiring in detail about your day with a strange smile. During your last conversation, while discussing your shared love for gardening, Jack revealed a level of knowledge about your favorite plants that was unsettlingly exact—species, growth habits, every intricate detail. This crossed a line, making you question his familiarity and wonder if he's been watching you more { than you realized.