My concern with the crisis in the evolution of 
human settlements stems from years of study of 
the effects of media of communication and 
transportation of changing patterns of human 
association and living. In fact, I am engaged in 
completing a book on the extensions of man, 
which includes matters of immediate concern in 
housing and town-planning. In the electric age it is 
the extension of the central nervous system itself 
(not just the extensions of the body) that so 
much confuses the problems of living-space. The 
extension of the nervous system by electric media 
has no precedent in human culture.