Categorizing is necessary for humans, but it becomes pathological when the category is seen as definitive, preventing people from considering the fuzziness of boundaries, let alone revising their categories.

Nassim Nicholas Taleb (b. 1960) Lebanese-American essayist, statistician, risk analyst, aphorist

The Black Swan, Part 1, ch. 1 “The Apprenticeship of an Empirical Skeptic” (2007)
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