Labels:book | brass | person | poster | web site OCR: Probes Tetrads Laws the Media McLuhan invented the Laws of the Media to explain the effects of man's inventions and technologies Everything from the paper clip o the airplane He took any tool or invention and asked four questions What does enhance What does make obsolete What does bring back ? And when pushed to extremes. what doesit flip into He called the four questions Tetrad. Pretty confusing eh? Why not try a few yourself? Previous Tools Next Excerpts bsolete wher oushed westions contusing Previou
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