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Fallacies
21 Fallacies
9
Philosophy
Undergraduate 2
11/07/2011

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Term

Fallacy

Definition

A Flawed or defective argument that may still be persuasive and even convincing.

Term
Appeal to pity
Definition
A fallacy of relevence whereby the claimant shifts the focus away from the supporting reasons to the potential negative consequences fro the claimant. Some appeals the emotion (including pit) can be legitimate, but many are not; context is the crucial factor
Term
Affirming the Consequent
Definition

A formally invalid pattern of reasoning that takes this form

If A, Then B

                               B (Affirming the consequent)

Therefore, A

Term
Denying the Antecedent
Definition

A formally invalid pattern that takes this form

If A, Then B      

                            Not A (denying the antecedent)

  Therefore, not B

Term
Appeal to Authority
Definition
A form of reasoning that is fallacious if the claimant strays outside his or her area(s) of expertise; it is perfectly acceptable if the claimant actually is an authority in the area in question.
Term
Appeal to popular opinion
Definition
A fallacy of relevance whereby, even if everyone believes X to be true, this in no way guarantee that X is true or that it is reasonable to believe that X is true
Term
Abusive Hominem
Definition
A fallacy of reveleance whereby claimants are personally attacked, rather than having supporting reasons for their claim called into question.
Term
"you too" Ad Hominem
Definition
A fallacy of relevance whereby person A, who has been accused of being guilty of X by person B, responds by claiming that person B is even worse with respect to X than A is. Perosn A completely ignores whether he or she is actually guilty of X
Term
Appeal to Force
Definition
A fallacy of relevance whereby someone threatens force (physical, economic, Political) if the other person does not agree with his or her view on a particular matter. Such an approach completely ignores the reasons offered in support of the claim in question.
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