"That thing the nature of which is totally unknown to you is usually what you need to find, and finding it is a matter of getting lost. The word "lost" comes from the Old Norse los, meaning the disbanding of an army, and this origin suggests soldiers falling out of formation to go home, a truce with the wide world. I worry now that many people never disband their armies, never go beyond what they know. Advertising, alarmist news, technology, incessant busyness, and the design of public and private space conspire to make it so. A recent article about the return of wildlife to suburbia described snow-covered yards in which the footprints of animals are abundant and those of children are entirely absent. As far as the animals are concerned, the suburbs are an abandoned landscape, and so they roam with confidence. Children seldom roam, even in the safest places. Because of their parents' fear of the monstrous things that might happen (and do happen, but rarely), the wonderful things that happen as a matter of course are stripped away from them. For me, childhood roaming was what developed self-reliance, a sense of direction and adventure, imagination, a will to explore, to be able to get a little lost and then figure out the way back. I wonder what will come of placing this generation under house arrest."