In my experience, fallacy theory is not just useless—it can be actively harmful. It encourages intellectual laziness, offering high-minded excuses to dismiss any argument you don’t like. It impoverishes debate by pretending that messy, real-world disagreements can be resolved with the blunt tools of formal logic. You end up like my students: slightly paranoid, dismissive, and, ironically, less critical than when they started.
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The Fallacy Fallacy
Why you shouldn't go looking for faulty reasoning everywhere.