Logical Fallacies

LogFall

A practical logical-fallacies reference with clear explanations, usable examples, and teaching tools.

Category

Tactical

Debate maneuvers that distract, derail, pressure, or strategically reroute the exchange.

Entries

30 fallacies in this category.

Diagnostic prompt

Is the argument still addressing the original issue, or has the conversation been steered away?

Category vs. family

A category is a diagnostic lens, so a fallacy may appear in more than one category. A family is the broader umbrella that gives the fallacy its single main home.

Ad hominem

Occurs when someone treats an attack on a person's character, motives, class, or biography as if it were a refutation of that person's argument.

TacticalEmotional
Foundational Middle school+

Appeal to accomplishment

Occurs when a claim is treated as true or weighty mainly because the person promoting it has impressive accomplishments in some other domain.

TacticalEvidential
Foundational Middle school+

Appeal to emotion

Occurs when a conclusion is pushed mainly by triggering fear, pity, outrage, pride, or hope rather than by showing that the conclusion follows from the evidence.

TacticalEmotionalEpistemic
Foundational Middle school+

Appeal to poverty

Occurs when a claim is treated as more trustworthy, virtuous, or true mainly because its proponent is poor, ordinary, or from humble circumstances.

Tactical
Foundational Middle school+

Appeal to wealth

Occurs when a claim is treated as more credible or correct mainly because it comes from a rich, famous, or financially successful person.

Tactical
Foundational Middle school+

Argument from repetition

Occurs when repetition is treated as if it adds evidence, wearing down doubt or making a claim seem true through familiarity.

Tactical
Foundational Middle school+

Argumentum ad baculum

Occurs when agreement is extracted by threat, intimidation, or coercive pressure rather than by showing that the claim is true.

TacticalEmotional
Foundational Middle school+

Association fallacy

Occurs when a claim is accepted or dismissed because of some irrelevant association rather than because of the merits of the claim itself.

TacticalEvidential
Foundational Middle school+

Bare assertion fallacy

Occurs when a contested claim is simply asserted, often confidently, without the evidence needed to justify it.

EvidentialTactical
Foundational Middle school+

Cherry picking

Occurs when someone selects only the evidence that supports a conclusion and ignores a wider body of evidence that weakens, qualifies, or reverses it.

TacticalEvidential
Foundational Middle school+

Contextomy

Occurs when words are selectively excerpted from their original context in a way that changes or distorts what the speaker meant.

TacticalLinguistic
Intermediate High school

Demanding negative proof

Occurs when someone tries to protect a claim by insisting that critics must prove the claim false instead of the claimant first supplying adequate support.

TacticalEvidential
Foundational Middle school+

Empty refutation

Occurs when someone declares an argument false, debunked, or dishonest without identifying the specific flaw that would actually show it is false.

Tactical
Foundational Middle school+

Fallacy of many questions

Occurs when a question smuggles in one or more assumptions that have not been established, then pressures the listener to answer as if those assumptions were already sett...

Tactical
Foundational Middle school+

False attribution

Occurs when support for a claim is borrowed from a source that is fabricated, misquoted, unqualified, anonymous in the wrong way, or otherwise not what it is presented to...

EvidentialTactical
Foundational Middle school+

False surrender

Occurs when someone calls for a truce, balance, or 'agree to disagree' posture not because the evidence is genuinely inconclusive, but because their position is under pre...

Tactical
Foundational Middle school+

If-by-whiskey

Occurs when someone uses strategically shifting language that seems to support both sides by quietly changing the meaning of the key term to suit the audience.

Tactical
Foundational Middle school+

Judgmental language

Occurs when pejorative, loaded, or insulting language is used to steer judgment in place of actual support for the conclusion.

Tactical
Foundational Middle school+

Misleading vividness

Occurs when a striking anecdote or emotionally intense case is used to make a problem seem more common, clear, or representative than the broader evidence allows.

TacticalPerceptualEvidential
Foundational Middle school+

Moving the goalpost

Occurs when evidence that was supposed to satisfy a stated standard is dismissed and a new, harder standard is introduced so the conclusion never has to be reconsidered.

TacticalEvidential
Foundational Middle school+

Perverted analogy

Occurs when an analogy is deliberately stretched past its intended point so it can be mocked or refuted.

TacticalConceptual
Intermediate High school

Poisoning the well

Occurs when negative framing is introduced in advance so that whatever a person says next will be dismissed before it is fairly heard.

Tactical
Foundational Middle school+

Proof by verbosity

Occurs when a claim is protected by an avalanche of words, side points, jargon, or branching assertions that overwhelm reasonable scrutiny and create the illusion of dept...

TacticalLinguistic
Intermediate High school

Red herring

Occurs when someone diverts attention from the unresolved issue by switching to a different issue that is easier, safer, or more emotionally useful.

TacticalEmotional
Foundational Middle school+

Straw man argument

Occurs when someone replaces an opponent's actual position with a weaker, more extreme, or simplified version and then refutes that easier target.

Tactical
Foundational Middle school+

Style over substance fallacy

Occurs when the polish, confidence, charisma, or dramatic force of a presentation is treated as if it established the quality of the argument itself.

TacticalPerceptual
Foundational Middle school+

Thought-terminating cliché

Occurs when a familiar slogan or stock phrase is used to stop inquiry, deflect scrutiny, or create the feeling that an issue has already been settled.

Tactical
Foundational Middle school+

Tu quoque

Occurs when criticism is answered not by engaging the issue, but by pointing to similar hypocrisy or wrongdoing elsewhere.

TacticalEvidential
Foundational Middle school+

Two wrongs make a right

Occurs when someone treats one wrong act as justified because it responds to, retaliates against, or balances out another wrong.

TacticalEvidential
Foundational Middle school+

Vague insulators

Occurs when vague, elastic, or undefined terms are chosen so that a position sounds meaningful while resisting clear testing or criticism.

Tactical
Foundational Middle school+