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What are fallacies?
• Deceptive, misleading, or false beliefs• Opinions based on inaccurate facts or invalid
reasoning
Reading Everything’s An Argument
• Write the definition for each fallacy on your green sheet
• Definitions found on p. 515-533 in the book
Fallacies of Emotional Appeal
Scare Tactics
Either-or choices
Eat your broccoli or no dessert!
Slippery Slope
http://www.youtube.com/watch?v=CCuPyLeDzng&feature=relmfu
Sentimental Appeals
Fallacies of Ethical Argument
Appeals to False Authorities
• “Dr. Blair claims that chewing Trident gum is good for your teeth.”– If Dr. Blair is a dentist, this would be an appeal
using proper authorities.– If Dr. Blair is NOT a dentist, and is instead an
English professor, she is not an authority on dental hygiene.
Dogmatism
Ad Hominem
http://www.youtube.com/watch?v=pIhtph4_p7Y
Fallacies of Logical Argument
Hasty Generalization
Assuming that if my Ford breaks down, all Fords are poorly made cars.
Faulty Causality
Begging the Question
• Claim: You can’t give me a C in this course…• Reason: because I’m an A student.
• Faulty Logic: An “A student” is someone who can’t receive C’s.
Equivocation
“I wrote the whole paper myself”Word play implies that she did not plagarize, but it could mean that she simply physically copied down
another paper, therefore “writing” it herself
Non Sequitur
= nonsense!
All roses are flowers, all flowers are plants… and therefore all birds have feathers.
The Straw Man
Obama stated that “We can no longer afford to be indifferent to suffering outside our borders.”
--Implies that no one cared before.
Faulty Analogy
• http://www.youtube.com/watch?v=_3DxDBH9nn4&feature=relmfu
Fallacies in Political Ads
• Take one ad from each pile.• Take four post-its.• Please do not write on the ads.• Read everything on your ads.• Label and explain four or more fallacies on
your ads.