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The principle that fallacies operate in two modes: absolute fallacies (errors that are fallacious in all contexts, by any reasonable standard) and relative fallacies (errors that are fallacious in some contexts but may be acceptable or even valid in others). The law acknowledges that some fallacies are universally wrong—affirming the consequent, denying the antecedent, non sequiturs that genuinely don't follow. Other fallacies are context-dependent—appeals to emotion that are appropriate in some settings, ad hominem that is relevant, slippery slopes that sometimes happen. The law of absolute and relative fallacies reconciles the need for logical standards with the reality of contextual reasoning.
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