“I have never endorsed the events I have described, 
nor have I ever condemned any of the things I 
analyzed. I am interested in understanding 
processes.” (Letters , (1987) p.399)

McLuhan’s approach was educational, a tactical 
primer for perceptual training. But this 
consciousness raising could only succeed provided 
the student was prepared to invest substantial 
energies. At the end of his career, McLuhan 
formulated his laws of media, which he offered to 
his fellow explorers as a tetrad of four questions 
that could generate insight into the continuous 
phases of response to all extensions, all media, all