Since Sputnik, the earth has been wrapped in a dome-like blanket or bubble. Nature ended. - Marshall McLuhan

Typography is not only a technology but is in itself a natural resource or staple, like cotton or timber or radio; and, like any staple, it shapes not only private sense ratios but also patterns of communal interdependence. (p. 186)

In an age of multiple and massive innovations, obsolescence becomes the major obsession.

Although the medium is the message, the controls go beyond programming. The restraints are always directed to the “content,” which is always another medium. The content of the press is literary statement, as the content of the book is speech, and the content of the movie is the novel. So the effects of radio are quite independent of its programming. (p. 267)