How wireless technology is redefining the relationship of communication, technology, and society around the world--in everyday work and life, in youth culture, in politics, and in the developing world.

Most studies of the digital divide and network connectivity begin by asking how many people are in a network, and what are the network effects associated. We flip the framing by using on the excluded instead of the included. We find, looking at Metcalfe’s Law, Reed’s Law, and other network...