As continuous fields of presence are overlaid on architectural

and urban space, the ancient distinction between settlers and

nomads-long the bedrock of our thinking about cities-is eroding

in subtle but important ways. In the emerging wireless era, our

buildings and urban environments need fewer specialized spaces

built around sites of accumulation and resource availability and

more versatile, hospitable, accommodating spaces that simply

attract occupation and can serve diverse purposes as required. A

café table can serve as a library reading room. A quiet place under

a tree can become a design studio. A subway car can become a

place for watching movies.