Logical Fallacies

LogFall

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

Category

Perceptual

Mistakes rooted in appearances, impressions, or the way something seems at first glance.

How to spot it

3 fallacies in this category.

3

Is this conclusion being drawn from how things seem rather than what has been shown?

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.

Anecdotal fallacy

Occurs when a vivid personal story, testimonial, or isolated case is treated as stronger evidence than broader, better, or more representative evidence.

EvidentialPerceptual
Intermediate Intro college
Anecdotal fallacy companion poster in a retro mid-century editorial cartoon style, illustrating occurs when a vivid personal story, testimonial, or isolated case is treated as stronger evidence than broader, better, or more representative evidence.

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
Intermediate High school
Misleading vividness companion poster in a retro mid-century editorial cartoon style, illustrating 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.

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 High school
Style over substance fallacy companion poster in a retro mid-century editorial cartoon style, illustrating occurs when the polish, confidence, charisma, or dramatic force of a presentation is treated as if it established the quality of the argument itself.