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What are fallacies? • Deceptive, misleading, or false beliefs • Opinions based on inaccurate facts or invalid reasoning

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Page 1: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

What are fallacies?

• Deceptive, misleading, or false beliefs• Opinions based on inaccurate facts or invalid

reasoning

Page 2: 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

Page 3: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

Fallacies of Emotional Appeal

Page 4: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

Scare Tactics

Page 5: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

Either-or choices

Eat your broccoli or no dessert!

Page 6: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

Slippery Slope

http://www.youtube.com/watch?v=CCuPyLeDzng&feature=relmfu

Page 7: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

Sentimental Appeals

Page 8: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

Fallacies of Ethical Argument

Page 9: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

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.

Page 10: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

Dogmatism

Page 11: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

Ad Hominem

Page 12: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

http://www.youtube.com/watch?v=pIhtph4_p7Y

Page 13: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

Fallacies of Logical Argument

Page 14: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

Hasty Generalization

Assuming that if my Ford breaks down, all Fords are poorly made cars.

Page 15: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

Faulty Causality

Page 16: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

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.

Page 17: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

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

Page 18: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

Non Sequitur

= nonsense!

All roses are flowers, all flowers are plants… and therefore all birds have feathers.

Page 19: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

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.

Page 20: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

Faulty Analogy

Page 22: What are fallacies? Deceptive, misleading, or false beliefs Opinions based on inaccurate facts or invalid reasoning

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.