A rhetorical fallacy where someone demands that an argument follow logical standards that are impossible to meet given the nature of the claim or the context of the debate. The fallacy lies in applying deductive standards to inductive arguments, formal logic to informal reasoning, or mathematical proof to historical interpretation. The demand for "perfect logic" becomes a way of dismissing any reasoning that doesn't fit a narrow, context-inappropriate logical framework.
"Your historical analysis isn't logically valid—it doesn't follow deductive rules." That's Fallacy of Impossible Logic—applying deductive standards to historical reasoning. History doesn't do deduction; it does inference to best explanation. Demanding deductive validity from historical argument is like demanding a fish to climb. Logic is multiple; your logic isn't the only logic."
by Dumu The Void February 28, 2026
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