1. Informal Fallacies 1: Language, Relevance, Authority
Invitation to Critical Thinking First Canadian Edition Joel Rudinow Vincent E. Barry Mark Letteri
Chapter 11
Informal Fallacies 1: Language, Relevance, Authority

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Overview of Fallacies
Fallacies of Language
Fallacies of Relevance
Fallacious Appeals to Authority
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3. © 2008 by Nelson, a division of Thomson Canada Limited
Fallacies of Language
Problematic Ambiguity:
Informal Fallacy of Problematic Equivocation
Informal Fallacy of Amphibole
Informal Fallacy of False Implication
Informal Fallacy of Composition
Informal Fallacy of Division
© 2008 by Nelson, a division of Thomson Canada Limited

4. © 2008 by Nelson, a division of Thomson Canada Limited
Fallacies of Language
Problematic Vagueness:
In argument
In advertising:
Puffery
Hyperbole or hype
Weasel words
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Fallacies of Language
Informal Fallacy of Classification:
Denotation
Informal Fallacy of Loaded Language:
Connotation and the Informal Fallacy of Loaded Language
Euphemism
Dysphemism
Informal Fallacy of Rhetorical Question
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6. Fallacies of Relevance
Ad Hominem :
Informal Fallacy of Abusive ad hominem
Informal Fallacy of Circumstantial ad hominem
Informal Fallacy of Guilt by Association
Informal Fallacy of Poisoning the Well
Informal Fallacy of Genetic Appeal
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7. Provincialism, Tradition, Popularity, Novelty, and Positioning
Informal Fallacy of Provincialism
Informal Fallacy of Appeal to Tradition
Informal Fallacy of Appeal to Popularity
Informal Fallacy of Appeal to Novelty
Informal Fallacy of Guilt by Association
Positioning
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8. Fallacious Appeal to Emotion
Informal Fallacy of Appeal to Anger
Informal Fallacy of Appeal to Fear
Informal Fallacy of Appeal to Pity
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Diversionary Tactics
Red Herring
Straw Person
Informal Fallacy of Two Wrongs
Informal Fallacy of Common Practice
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10. Fallacious Appeals to Authority
Appeals to Invincible Authority
Informal Fallacy of Appeal to Unidentified Authority
Informal Fallacy of Appeal to Irrelevant Authority
Informal Fallacy of Division of Expert Opinion
Conflict of Interest
© 2008 by Nelson, a division of Thomson Canada Limited