Waiting is a social phenomenon. There is a politics to it: to who waits for what and for how long, and to who doesn’t, and how impatiently, and at what cost. You can tell a lot about the hierarchy of a city by observing its distribution of patience and impatience, mobility and immobility. The more concentrated wealth in an area, for example, the more taxis; the more taxis, the more traffic; the more traffic, the longer people who can’t afford cab fare are left waiting for the bus. In this network of contingencies and indirect consequences, when one person takes a shortcut another is always left in the lurch. People feel this. A sense of injustice is fundamental to the experience of waiting.