Logical Fallacies

LogFall

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

Family

Relevance/Distraction Fallacy

The move shifts attention away from the real issue and substitutes something rhetorically nearby but logically irrelevant.

Entries

11 fallacies in this family.

Quick family question

What rhetorically nearby move is distracting from the real issue?

Family vs. category

A family is the broad umbrella that gives a fallacy its main home. Categories are the narrower diagnostic tags, so the same fallacy can appear in multiple categories while still belonging to one family.

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+

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+

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+

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+

Genetic fallacy

Occurs when a claim, practice, or idea is judged mainly by its origin rather than by its present content, evidence, or merits.

LinguisticConceptual
Advanced Intro college

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+

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+

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+

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+