Rhetorical Fallacies & Persuasion Tactics

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Abstractions about how arguments persuade or mislead, cataloging informal fallacies that substitute emotion, authority or repetition for evidence (Ad Hominem, Ad Populum, Genetic Fallacy, Straw Man), and rhetorical strategies for framing and defending a position (Prolepsis, Apologia, Two-Sided Message, Poisoning the Well).

24 abstractions in this family — domain-specific abstractions that sit near one another in structural-signature space (k-means over structural-signature embeddings). Each is shown with its short description.

• Ad Baculum (Appeal to Force) — The fallacy of securing acceptance of a claim by threatening the listener rather than giving reasons bearing on its truth — a relevance error in which a payoff-altering signal is substituted for a truth-bearing one, so compliant assent and warranted belief come apart.
• Ad Hominem — Reject or discredit a claim by substituting an attack on its source — character, motives, circumstances, inconsistency, or affiliation — for evaluation of the claim and its evidence.
• Ad Misericordiam (Appeal to Pity) — Win acceptance of a claim by evoking sympathy or pity rather than supplying evidence, substituting an affective shift in the audience for epistemic support on a proposition that is independent of the speaker's circumstances.
• Ad Nauseam (Argument from Repetition) — Diagnose the fallacy of treating a claim as established by bare repetition, where frequency raises felt credibility through processing fluency while adding zero new evidential warrant.
• Ad Populum (Appeal to the People) — Name the fallacy of treating a claim as established by its popularity, and expose the defect with one test — did the believers independently weigh the same evidence, or inherit the belief through a social channel? — that separates warranted aggregation from an influence cascade wearing the same clothes.
• Apologia — Analyze or build a defense of impugned conduct as a combination of four strategy primitives — denial, bolstering, differentiation, transcendence — where denial and transcendence are mutually exclusive, so mixing them produces an incoherent, self-damaging apologia.
• Authority Bias — Decompose any act of deference into a content term and a source-cue term, and flag the upward tilt as bias whenever authority signals — titles, uniforms, confident bearing — inflate credence beyond the authority's genuine expertise in the specific claim.
• Bulverism — Assume an opponent's conclusion is false, then explain the psychological or sociological cause of their 'error' — substituting a genetic account of the belief for the logical evaluation that was owed.
• Causal Map — A causal map draws attributed claims about how factors influence one another as a directed network, without treating those claims as proven effects.
• Conjunction Fallacy — Detect a probability-judgment error by watching for a more detailed scenario being rated more probable than the simpler scenario it is a strict subset of — the signature of resemblance quietly standing in for probability.
• Deliberative Rhetoric — The Aristotelian genre of public speech that advises a deciding body on future action by weighing expected advantage against harm — classified by aim and temporal orientation, not surface form, and carrying a distinct forecast-under-uncertainty proof-burden.
• Genetic Fallacy — Judge a claim, practice, object, or idea by source or origin information as though it settled present truth, validity, or merit, replacing the evaluation that is owed with an origin story not independently connected to the relevant criterion.
• Incorrigibility — A proposition or belief status such that the subject cannot be mistaken about it or cannot revise it through correction.
• Logos — Persuade through the apparent rational structure of an argument — premises, evidence, and inferential steps — so an audience reads the force as grounded in reasoning rather than in the speaker's character or its own emotion.
• Message Sidedness — Specify whether a persuasive message presents only the favoring arguments (one-sided) or also acknowledges and rebuts the opposing case (two-sided), a design variable that trades larger immediate attitude shift against more durable resistance to later counter-persuasion.
• Middle Ground Fallacy — Detect the error of concluding the truth must lie between two opposed positions merely because they are opposed — substituting a positional operation for an evidential one — by asking whether the midpoint keeps its credibility once one position is shown unsupported.
• Narrative Paradigm — Walter Fisher's theory that humans judge value-laden arguments by narrative rationality — narrative coherence (does the story hang together?) and fidelity (does it ring true against experience?) — rather than by formal-logical soundness.
• Overwhelming Exception — An informal fallacy in which material exceptions shrink a broad-sounding claim so far that its surviving scope no longer supports the advertised conclusion.
• Peripheral Route Processing — The Elaboration Likelihood Model's low-elaboration pathway in which limited motivation or ability makes surface cues such as apparent expertise, attractiveness, message length, familiarity, and affect carry persuasion, producing attitude change that is cheap to acquire but comparatively labile.
• Poisoning the Well — Pre-emptively discrediting the source of a forthcoming argument, so an anchoring frame of suspicion is installed first and every later thing the source says is received through it — including any rebuttal, read as defensiveness.
• Prolepsis — Raise an anticipated objection in your own voice and answer it before an opponent can — 'you might object that X; but in fact Y' — bundling framing control (the objection arrives in its most rebuttable form) with a credibility display (the audience infers you have already survived it).
• Quote Laundering — A provisional but accurate statement is cited across successive venues that each strip its caveats and scope, until it circulates as authoritative settled fact — a channel failure, not a false source, so it resists source correction and needs traceability instead.
• Straw Man — Refute a weakened proxy of an opponent's view instead of the view they actually hold, so an apparent victory leaves the real position untouched.
• Two-Sided Message — A persuasive communication that explicitly concedes an opposing argument alongside its advocacy, purchasing credibility with a costly concession — an advantage that holds only when credibility is the bottleneck and the audience is skeptical or already aware of the counter-argument.