There are many valid responses to the four questions posed by Marshall McLuhan. Here are some sample answers. try to come up with answers for the following objects, then click on the tetrad to compare replies:

Another tetrad (taken directly from McLuhan's Wake):


Yet another (taken directly from McLuhan's Wake):


Many thanks to:

Wayne Constantineau

Understanding Media: Extensions of Man,

McLuhan for Beginners,

McLuhan's Wake


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