had a very big influence on McLuhan in the sense 
that what Innis was doing was recognizing the 
fundamental role of communication media in 
patterning of social behavior. Innis had taken care 
of issues of time and space, Marshall would take 
care of issues of sensory modes, sensory 
modalities, without forgetting time and space. Innis 
was interested in how certain materials would 
increase or decrease the spatial control area of a 
ruler or social system. So that, stone would be 
heavy to carry, but parchment would allow you to 
send your emissaries much farther afield, and 
hence create much larger empires. And you would 
have to keep in touch with regular relays, you