The airplane, on the other hand, by accelerating the rate of 
transportation, tends to dissolve the railway form of city, 
politics, and association, quite independently of what the 
airplane is used for.

     Let us return to the electric light. Whether the light is 
being used for brain surgery or night baseball is a matter of 
indifference. It could be argued that these activities are in some 
way the “content” of the electric light, since they could not 
exist without the electric light. This fact merely underlines the 
point that “the medium is the message” because it is the 
medium that shapes and controls the scale and form of human 
association and action. The content or uses of such media are 
as diverse as they are ineffectual in shaping the form of human 
association. Indeed, it is only too typical that the “content” of 
any medium blinds us to the character of the medium. It is only