Never before in history have so many people been under the gaze of so many strangers. Humans evolved in small groups, defined by kinship: those we knew, knew us. And our imaginative capabilities allowed us to know strangers—kings and queens, heroes of legend, gods above—all manner of at least partly mythic personalities to whom we may have felt as intimately close to as kin. For the vast majority of our species’ history, those were the two principal categories of human relations: kin and gods. Those we know who know us, grounded in mutual social interaction, and those we know who don’t know us, grounded in our imaginative powers.
Public spaces as expression of human endeavor and artifacts of the social world are the physical and metaphysical heart of the cities, thus providing channels for movement, nodes of communication and common ground for cultural activities.