“Formal logic and the logical syllogism encapsulate connectedness in reasoning.”
1980s, Laws of Media: The New Science (with Eric McLuhan) (1988)
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Marshall McLuhan 416
Canadian educator, philosopher, and scholar-- a professor … 1911–1980Related quotes

Jokes and their Relation to the Cognitive Unconscious (1980)
Context: I am inclined to doubt that anything very resembling formal logic could be a good model for human reasoning. In particular, I doubt that any logic that prohibits self-reference can be adequate for psychology: no mind can have enough power — without the power to think about Thinking itself. Without Self-Reference it would seem immeasurably harder to achieve Self-Consciousness — which, so far as I can see, requires at least some capacity to reflect on what it does. If Russell shattered our hopes for making a completely reliable version of commonsense reasoning, still we can try to find the islands of "local consistency," in which naive reasoning remains correct.

Source: Realistic models in probability (1968), p. 1

“All logical arguments can be defeated by the simple refusal to reason logically”
Source: Dreams of a Final Theory

A remarkable life-story

“The crime is now logical and reasonable.”
Murder for Christmas (1939, Holiday for Murder, Hercule Poirot’s Christmas)

“Old answers never perfectly suit new questions, except in the most formal, logical circumstances.”
K-Linesː A Theory of Memory (1980)

1920s, Science and the Modern World (1925)