The life of the street, at its best, is lyrical, unexpected, and momentarily intimate. Cities by definition comprise strangers, and when strangers find cause to break their urban detachment, the episodes of street intimacy they make can be precious and thrilling. These moments fascinate me, both in my own experience and in the abstract, as what I believe to be a craved pleasure of city dwellers. I’m talking here about the pleasure of interruption, of fleeting connections. These moments are metonyms for why we choose to live in cities. They shimmer with the beauty of the ordinary and everyday. And they’re rich with meaning, as instances of what linguists call “phatic communication,” which is to say, an exchange that has little semantic value but high social and emotional value. When your neighbor says, “How’re you doing?” what they also say is: I know you, I recognize you, we’re in this thing of being humans together.