Information technology may eventually cause a decline in the need
for urban concentration. However, the case is much less clear
than the futurists would have us believe. As telecommunications
improve, the demand for interactions of all varieties should rise,
and the role of cities as centers of interactions should also
increase. After all, the most famous modern agglomeration of industry,
Silicon Valley, has occurred in the industry with the most direct
access to the latest and best information technology. This agglomeration
probably occurs because that industry relies so heavily on interactions
and requires so much knowledge to be transferred across firms
and individuals.