thing to use for comparison. The acoustic or 
simultaneous space in which we now live is like a 
sphere whose centre is everywhere and whose 
margins are nowhere. Acoustic space cannot be 
cut into pieces, as visual space can. It is both 
compressed and indivisible.

Marshall McLuhan, “Technology and the Human 
Dimension,”  interview by Louis Forsdale, Marshall  
McLuhan: The Man and His Message , (Golden, 
1989), pp. 23-24.