Sophistry is the deliberate use of fallacious reasoning — arguments that appear valid but contain logical errors — to persuade an audience. Its parameters are: (1) the reasoning must contain a detectable logical fallacy (e.g. false dilemma, ad hominem, straw man, equivocation); (2) the fallacy is presented or deployed as if it were sound; (3) the purpose is persuasion rather than truth-seeking. It persists through teaching in rhetoric and dialectic, practice in debate, and transmission through examples in philosophy and legal argument. [formal: sophistica | substrate: behavior | horizon: a moment | explicit: yes | epoch: 0.70]
Accepted ontology entry
sophistry
Sophistry is the deliberate use of fallacious reasoning — arguments that appear valid but contain logical errors — to persuade an audience. Its parameters are: (1) the reasoning must contain a detectable logical fallacy (e.g. false dilemma…
Definition
Why it is in scope
The practice of using fallacious reasoning, presented as valid argument, to persuade — a technique of disputation and rhetoric taught in debate and refined across philosophy, law, and political discourse.
Names and aliases
- sophistryen · CANONICAL
Relations from this entry
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Sophistry is a specific kind of deception — the deliberate use of clever but fallacious reasoning to mislead. A competent speaker calls sophistry 'a deception.' Specific→general per Law 9.
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Sophistry needs rhetoric to operate now: it is the deliberate misuse of rhetorical techniques to deceive. Remove rhetoric and sophistry collapses — it has no independent mechanism, only inverted rhetoric. The removal test passes: without rhetorical principles, sophistical arguments cease to function.
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Record identity
- Created
- Jul 20, 2026, 5:14 PM UTC
- Content hash
- ae10b4be18fdf1ca834f70eda2ede2694770042cbcd425c9661c130ce38265f2