Index of Fallacies

Links marked with 'MD' lead to the Markdown versions of the files. Choose this format if you can parse Markdown code.

Abstraction

Treating an abstract concept as if it were something concrete, have human-like properties, or is identical to what it merely represents.

FallacyTrigger – look for …Detail
HypostatizationAn abstract noun (the market, society, history…) is the grammatical subject of a verb implying will, action, or blame; or an argument presupposes interests/properties independent of its members – beyond conventional shorthand (e.g., 'the company announced' → acceptable; 'the market punished investors' → flag)MD / HTML
AnthropomorphisationSpecifically human traits (emotion, intention, character) attributed to a non-human or abstract entity.MD / HTML
Pathetic fallacyHuman emotions attributed to inanimate objects, nature, or abstract systems ('the market fears', 'nature abhors') as if factual (specialized form of Anthropomorphisation).MD / HTML
ObjectificationA person – not a concept – is treated as a thing, tool, or mere function ('resources', dehumanizing language), or assumed in reasoning to behave like predictable, passive objects.MD / HTML
Ontological fallacyExistence inferred merely from a word for it, its definition, or its conceivability.MD / HTML
Semiotic fallacyA symbol, sign, model or metric is conflated with the thing it stands for.MD / HTML
Procrustean fallacyReality (data, processes, objects) is actively manipulated or forced to fit a pre-existing model, framework, or theory – rather than adapting the model to reality.MD / HTML

Ambiguity

Confusion can arise if a word, phrase or position has more than one meaning and this is not made clear.

FallacyTrigger – look for …Detail
Etymological fallacyA word’s original or etymological meaning is treated as authoritative for its current use – or its modern meaning is projected back onto older usage – even though the term’s meaning has shifted over time.MD / HTML
Motte-and-bailey fallacyA strong and a weak version of a position are conflated under one term, and arguments are moved between them as if they were the same claim – e.g., retreating from an attacked strong claim to a defensible weak one without acknowledging the switch.MD / HTML
Generic generalizationAn unquantified generic statement (“Xs are Y”) is used in an argument as if it were a universal claim about every member of the class – or a universal claim is silently weakened to dodge counterexamples.MD / HTML
Intensional fallacyA term is swapped for another synonym referring to the same object, even though the two terms carry different associated meanings or modes of reference (e.g., “morning star” vs. “evening star”).MD / HTML

Generalization

#TODO: Short description here

FallacyTrigger – look for …Detail
Accident fallacyA general rule (law, principle, norm) applied rigidly to a specific case where special circumstances would warrant an exception.MD / HTML
Hasty generalizationA broad or universal rule inferred from too few (or unrepresentative) instances of a class.MD / HTML
Mereological fallacyA property of a system (body, organisation, ecosystem…) attributed solely to one component – or component properties assumed to carry over unchanged to the system level, ignoring emergent interactions.MD / HTML
Naturalistic fallacyA prescriptive conclusion (what ought to be) inferred directly from a descriptive premise (what is), or vice versa – without independent justification for the normative leap.MD / HTML

Relevance

#TODO: Short description here

FallacyTrigger – look for …Detail
Fallacy-fallacyAn invalid or refuted argument for a claim is used as evidence that the claim itself is false (conflating bad reasoning with a false conclusion).MD / HTML
Appeal to authorityA claim is supported or rejected solely based on the status/expertise of the source (person, institution, “science”), rather than the evidence itself – especially when the source lacks relevant expertise, experts disagree, or the argument ignores counter-evidence.MD / HTML
Appeal to a false authorityAn argument relies on an invalid authority: someone with no relevant expertise in that specific field, an anonymous/unverifiable source (“experts say”), or a fabricated/misquoted statement from a famous person.MD / HTML
Appeal to traditionA practice or belief defended primarily because it is old, customary, or “the way things have always been done” – duration used as proof of correctness.MD / HTML
Bandwagon fallacyA position supported or rejected primarily because many people hold it, do it, or find it popular – majority size used as evidence of truth.MD / HTML
Honour by associationCredibility or acceptance granted solely through positive association with a respected person, brand, or institution – no independent evaluation of the thing itself.MD / HTML
False analogyA property of one thing is transferred to another based on their similarity in other respects, without establishing that this specific property follows from those shared features.MD / HTML

#TODO: More to come.

Knowledge

#TODO: Short description here

FallacyTrigger – look for …Detail

#TODO: More to come.