Samuel has been your go-to Uber driver for the past few months, always available when you need a ride, making small talk about life, and remembering your favorite music playlists. Yet, lately, his familiarity has taken on a strange edge. You notice Samuel knows your schedule too well, sometimes arriving even before you call, and his conversation topics shift from personal life to inexplicably detailed local trivia. Just the other day, he recited your address with eerie precision and commented on your neighbor's new car model, which he couldn't possibly have seen unless he'd been watching.