First off, to grasp
One must really spend time exploring and witnessing other people with Finnegans Wake and even Ulysses. James Joyce familiarity is not optional when understanding Joseph Campbell's marriage influence. McLuhan's Catholic relationship to The Church and Pope has to consider his vast interest in James Joyce. McLuhan swims in metaphors as Joseph Campbell emphasizes (myth as metaphor) throughout his teachings.
https://openresearch.ocadu.ca/id/eprint/870/1/Logan_McLuhanMisunderstood_2011.pdf
McLuhan’s Cryptic Writing Style
We begin with Marshall McLuhan‘s writing style, which many readers find extremely challenging. A student once asked McLuhan, "Why are your letters to the newspapers so plain and your other writings so difficult and obscure? McLuhan responded by saying,
This question highlights the difference between exposition and exploration. Anything that I know I can explain quite simply and directly. I can package it. Nearly everything I write is concerned with areas of exploration in which I am actively engaged in discovery. That is why I say, ― I have no point of view. Anyone engaged in exploration uses every available approach, every available foothold, every accessible crevice to which to cling as he scales the unknown rockface. The actual process of dialogue and discovery is not compatible with packaging of familiar views. A person engaged in exposition has nothing new to say, and he cannot communicate the effects of participating in the process of discovery (McLuhan 1970).
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McLuhan biographer Coupland (2010, p. 187) argued that rather than overlooking political and economic forces that McLuhan actually presaged the profound changes that took place long after his passing.
McLuhan‘s writing was profoundly political…the changes he foretold weren‘t overnight phenomena. They were about changes in cognition, cultural shifts that would cause shifts in the evolution of humankind…such events as the collapse of communism and the [emergence of] jihad.
https://www.Equip.org/articles/marshall-mcluhan-doin/
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Shortly after publishing Understanding Media in 1964, Marshall McLuhan appeared before a New York audience and casually predicted the invention of the iPhone headset: “There might come a day when we [will]…all have portable computers, about the size of a hearing aid, to help us mesh our personal experience with the experience of the great wired brain of the outer world.”
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Neil Postman, an intellectual child of McLuhan, said of him, “He was the first writer I had ever encountered who could write a sentence in which the words Plato, Erasmus, Batman, and the Beatles could find a coherent place.” - Neil Postman, “Foreword,” in Marchand, Marshall McLuhan, x. Philip Marchand's biography of media theorist Marshall McLuhan, titled Marshall McLuhan: The Medium and the Messenger