Logical Fallacies

LogFall

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

Family

Conceptual/Framing Fallacy

The claim is distorted by bad categories, rigid framing, or confused conceptual boundaries.

Entries

19 fallacies in this family.

Quick family question

What bad category, rigid frame, or confused boundary is distorting the claim?

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.

Abstraction denial

Occurs when someone denies the reality or causal relevance of a higher-level pattern just because the pattern is realized through lower-level parts.

Conceptual
Foundational Middle school+

Abstraction fallacy

Occurs when a model, law, or abstraction drawn from experience is treated as if it were a logically necessary rule that reality cannot ever depart from.

Conceptual
Foundational Middle school+

All or nothing fallacy

Occurs when support for part of a view, or problems with part of a view, are treated as if they force total acceptance or total rejection of the whole package.

EpistemicEvidential
Intermediate High school

Artificial negation

Occurs when the wording of a negative position is manipulated so that mere non-belief is treated as if it were the same thing as a strong positive denial.

EpistemicEvidential
Intermediate High school

Continuum fallacy

Occurs when a claim is rejected simply because the concept involved has blurry boundaries rather than a perfectly sharp cutoff.

ConceptualLinguistic
Intermediate High school

Denying a remote hypothetical

Occurs when a hypothetical test case is dismissed as irrelevant merely because it is rare, extreme, or unlikely, even though the principle under debate is supposed to be...

EvidentialConceptual
Foundational Middle school+

Denying the correlative

Occurs when one side of a genuine contrast is denied or redefined so the opposing term has no place to apply.

Conceptual
Intermediate High school

Fallacy of necessity

Occurs when a condition that is necessary given someone's current description is treated as if it were permanently or universally necessary in the real world.

LinguisticConceptual
Intermediate High school

False dilemma

Occurs when someone presents a limited set of options as if they were the only live possibilities, while reasonable alternatives are ignored or suppressed.

Conceptual
Foundational Middle school+

For the sake of argument denial

Occurs when a hypothetical premise is rejected simply because the speaker does not actually believe it.

ConceptualEpistemic
Intermediate High school

Historian's fallacy

Occurs when people in the past are judged as if they had the same information, background assumptions, and hindsight available to later observers.

Perspectival
Intermediate High school

Human standard fallacy

Occurs when a human classification, rule, or label is treated as if it automatically determined the underlying fact or moral status.

ConceptualPerspectival
Intermediate High school

Is-ought problem

Occurs when a descriptive claim about what is common, natural, or actual is treated as if it directly established what ought to be done.

Conceptual
Foundational Middle school+

Naturalistic fallacy

Occurs when something is treated as good, safe, or morally preferable mainly because it is called natural, traditional, or closer to nature.

ConceptualEvidential
Foundational Middle school+

Overwhelming exception

Occurs when a general principle is padded with so many exceptions that it no longer guides action or says much of substance.

LinguisticConceptual
Advanced Intro college

Package-deal fallacy

Occurs when traits that are often bundled together by stereotype, tradition, or habit are treated as if they must always come as a package.

Conceptual
Foundational Middle school+

Pathetic fallacy

Occurs when human feelings, intentions, or judgments are projected onto impersonal things and then treated as if the projection explained reality.

ConceptualPerspectival
Advanced Intro college

Psychologist's fallacy

Occurs when someone projects their own motives, fears, or mental structure onto others and treats that projection as insight into those other people.

Perspectival
Intermediate High school

Reification

Occurs when an abstraction is spoken of as if it were a concrete agent or thing in a way that misleads rather than merely using harmless metaphor.

ConceptualLinguisticPerspectival
Intermediate High school