As a basis of education, the medieval trivium of grammar, logic, and rhetoric was never thought to be superficial or introductory. It trained the mind to understand words, test inferences, and resist false persuasion. This matters when we consider the gravest dangers that face humankind. Six of the top ten arise, in large part, from failures of reasoning. The other four might not originate in bad reasoning, but they’ll punish bad reasoning in our response. The stark truth is that our survival now depends on the quality of our thought.
Nuclear war is the clearest case. Deterrence asks frightened leaders to behave rationally when fear, pride, error, and time pressure are at their worst. It assumes that escalation can be managed because it can be modeled. But a model isn’t a crisis, and a doctrine isn’t a human nervous system. One false warning, one humiliated or chaotically impatient ruler, one theatrical threat mistaken for intent, and civilization may discover that its cleverest theory was madness in uniform.
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