The document discusses how technology and wireless internet use in urban public spaces can influence both privatism and social participation. It provides examples of projects like Yellow Chair and Umbrellas.net that used technology to encourage communication between strangers in public. The document raises questions about how to use ubiquitous computing and urban spaces to create organic communication opportunities without relying on devices like phones or watches. It explores the social and cultural implications of ubiquitous computing in cities and ways to design for communication through unexpected connections.