I f you haven’t already heard of Friend , the company that makes a $129 wearable AI companion—a plastic disk, containing a microphone, on a necklace—you probably also have not seen Friend’s recent ad campaign. Late this past summer, Friend paid $1 million to plaster more than 10,000 white posters throughout the New York City subway system with messages such as I’ll binge the entire series with you . People hate these billboards. Revile them, even. Across the city, the ads are covered in