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Unacceptable Premises Formal Fallacies Today’s Agenda Fallacies Informal Fallacies Irrelevant Premises Unacceptable Premises Formal Fallacies Argument Toolkit, Part 2 Fallacies Formal Fallacies Unacceptable Informal Fallacies Premises Irrelevant Premises Unacceptable Premises Hasty Generalization False Analogy Slippery Slope Irrelevant False Dilemma Premises Begging the Question Ad Hominem/Against the Person Tu Quoque/Two Wrongs Genetic Fallacy Appeal to Ignorance Straw House Vocabulary Appeal to Emotion Appeal to Popularity Argument Toolkit, Part 2 Fallacies Formal Fallacies Unacceptable Informal Fallacies Premises Irrelevant Premises Unacceptable Premises Hasty Generalization False Analogy Slippery Slope Irrelevant False Dilemma Fallacious justPremises means based on a mistakenBegging the Question belief. Fallacies are defective arguments — argumentsAd Hominem/Against based on mistaken the Person beliefs — that occur withTu Quoque/Two such frequency Wrongs that they have names. ThereGenetic are two Fallacy types of fallacies — formal andAppeal informal to Ignorance. Straw House Fallacies Appeal to Emotion Appeal to Popularity Argument Toolkit, Part 2 Fallacies Formal Fallacies Unacceptable Informal Fallacies Premises Irrelevant Premises Unacceptable Premises Hasty Generalization False Analogy Slippery Slope Irrelevant We won’t spend too much time on FormalFalse Dilemma Begging the Question fallacies, but Premisesremember Modus Ponens (the valid formal argument), it has an opposite: Ad Hominem/Against the Person Tu Quoque/Two WrongsAffirming the Modus Ponens Genetic Fallacy Consequent If P ->Appeal Q to Ignorance If P -> Q P Straw House Q Formal thereforeAppeal Q to Emotion therefore P Fallacies Appeal to Popularity Argument Toolkit, Part 2 Fallacies Formal Fallacies Unacceptable Informal Fallacies Premises Irrelevant Premises Unacceptable Premises Hasty Generalization False Analogy Formal fallacies are defective becauseSlippery of their Slope Irrelevant formal structure. The defect in affirmingFalse the Dilemma Begging the Question consequent extendsPremises from what an if then statement does and doesn’t tell us. Ad Hominem/Against the Person Tu Quoque/Two WrongsAffirming the Modus Ponens Genetic Fallacy Consequent If P ->Appeal Q to Ignorance If P -> Q P Straw House Q Formal thereforeAppeal Q to Emotion therefore P Fallacies Appeal to Popularity Argument Toolkit, Part 2 Fallacies Formal Fallacies Unacceptable Informal Fallacies Premises Irrelevant Premises Unacceptable Premises Hasty Generalization False Analogy Slippery Slope Irrelevant Our focus will be on informal fallacies.False Just likeDilemma Begging the Question the differencePremises between deductive and inductive arguments, the difference between formal and Ad Hominem/Against the Person informal fallacies is about the content not the Tu Quoque/Two Wrongs structure ofGenetic the argument. Fallacy There are a lot of informalAppeal fallacies. to IgnoranceWe’re going to talk about just a few. Straw House Informal Appeal to Emotion Fallacies Appeal to Popularity Argument Toolkit, Part 2 Fallacies Formal Fallacies Unacceptable Informal Fallacies Premises Irrelevant Premises Unacceptable Premises Hasty Generalization False Analogy Slippery Slope Irrelevant False Dilemma Premises Begging the Question Specifically we are going to focus on a couple ofAd important Hominem/Against categories theof informal Person fallacy: IrrelevantTu Quoque/Two premise fallacies Wrongs and Unacceptable premise fallaciesGenetic. Fallacy Appeal to Ignorance Straw House Informal Appeal to Emotion Fallacies Appeal to Popularity Argument Toolkit, Part 2 Irrelevant Premises Fallacies Ad Hominem/Against the Person Tu Quoque/TwoFormal Wrongs Fallacies Unacceptable GeneticInformal Fallacy Fallacies Premises AppealIrrelevant to Ignorance Premises StrawUnacceptable House Premises Hasty Generalization Appeal to Emotion False Analogy Appeal to Popularity Slippery Slope False Dilemma Begging the Question Recall that Irrelevant premise fallacies introduce information that should not be considered in evaluating the conclusion at hand. It turns out that we can often be fooled into being persuaded by this irrelevant Irrelevant information. Premises Argument Toolkit, Part 2 Irrelevant Premises Fallacies Ad Hominem/Against the Person Tu Quoque/TwoFormal Wrongs Fallacies Unacceptable GeneticInformal Fallacy Fallacies Premises AppealIrrelevant to Ignorance Premises StrawUnacceptable House Premises Hasty Generalization Appeal to Emotion False Analogy Appeal to Popularity Slippery Slope False Dilemma Begging the Question Ad Hominem or Against the Person attacks the person making the argument rather than the argument itself. No matter what your political beliefs bad Irrelevant tanner is not a good Premises argument against a presidential candidate. Argument Toolkit, Part 2 Irrelevant Premises Fallacies Ad Hominem/Against the Person Tu Quoque/TwoFormal Wrongs Fallacies Unacceptable GeneticInformal Fallacy Fallacies Premises AppealIrrelevant to Ignorance Premises StrawUnacceptable House Premises Hasty Generalization Appeal to Emotion False Analogy Appeal to Popularity Slippery Slope False Dilemma Begging the Question Two Wrongs or Tu Quoque attacks/defends some claim on the grounds that some antagonist has used the same strategy. My mom keeps hassling me about Irrelevant smoking, but she smoked for 20 Premises years. Argument Toolkit, Part 2 Irrelevant Premises Fallacies Ad Hominem/Against the Person Tu Quoque/TwoFormal Wrongs Fallacies Unacceptable GeneticInformal Fallacy Fallacies Premises AppealIrrelevant to Ignorance Premises StrawUnacceptable House Premises Hasty Generalization Appeal to Emotion False Analogy Appeal to Popularity Slippery Slope False Dilemma Begging the Question Genetic Fallacy is like the ad hominem except the attack is against the group some person is from or a group that supports a claim. How could this Irrelevant man be a murderer?! He’s an orphan!!! Premises Argument Toolkit, Part 2 Irrelevant Premises Fallacies Ad Hominem/Against the Person Tu Quoque/TwoFormal Wrongs Fallacies Unacceptable GeneticInformal Fallacy Fallacies Premises AppealIrrelevant to Ignorance Premises StrawUnacceptable House Premises Hasty Generalization Appeal to Emotion False Analogy Appeal to Popularity Slippery Slope False Dilemma Begging the Question Straw House is an argument that attacks a weaker claim than the one given. After Will said that we should put more money into health and education, Warren responded Irrelevant by saying that he was surprised that Will hates Premises our country so much that he wants to leave it defenceless by cutting military spending. Argument Toolkit, Part 2 Irrelevant Premises Fallacies Ad Hominem/Against the Person Tu Quoque/TwoFormal Wrongs Fallacies Unacceptable GeneticInformal Fallacy Fallacies Premises AppealIrrelevant to Ignorance Premises StrawUnacceptable House Premises Hasty Generalization Appeal to Emotion False Analogy Appeal to Popularity Slippery Slope False Dilemma Begging the Question Appeal to Emotion tries to sway you via your emotions rather than your reason. Irrelevant Premises Argument Toolkit, Part 2 Irrelevant Premises Fallacies Ad Hominem/Against the Person Tu Quoque/TwoFormal Wrongs Fallacies Unacceptable GeneticInformal Fallacy Fallacies Premises StrawIrrelevant House Premises AppealUnacceptable to Emotion Premises Hasty Generalization Appeal to Popularity False Analogy Slippery Slope False Dilemma Begging the Question Appeal to Popularity tries to sway you via your desire to conform. Irrelevant Premises Argument Toolkit, Part 2 Unacceptable Premises Fallacies Hasty Generalization Formal FallaciesFalse Analogy Informal SlipperyFallacies Slope IrrelevantFalse Premises Dilemma UnacceptableBegging Premises the Question Irrelevant UnacceptablePremises premise fallacies rely on premises that are technically relevant to their conclusionsAd Hominem/Against but that are theunsuccessful Person support for theirTu conclusions. Quoque/Two The Wrongs are unsuccessful in ways that areGenetic obvious. Fallacy They should not be allowed Appealbecause to of Ignorance their obvious shortcomings. Straw House Unacceptable Appeal to Emotion Premises Appeal to Popularity Argument Toolkit, Part 2 Unacceptable Premises Fallacies Hasty Generalization Formal FallaciesFalse Analogy Informal SlipperyFallacies Slope IrrelevantFalse Premises Dilemma UnacceptableBegging Premises the Question Hasty GeneralizationIrrelevant is a failed enumerative induction. YouPremises aren't allowed to generalize based on the amount of information you have. Ad Hominem/Against the Person Tu Quoque/Two Wrongs Genetic Fallacy Appeal to Ignorance Straw House Unacceptable Appeal to Emotion Premises Appeal to Popularity Argument Toolkit, Part 2 Unacceptable Premises Fallacies Hasty Generalization Formal FallaciesFalse Analogy Informal SlipperyFallacies Slope IrrelevantFalse Premises Dilemma UnacceptableBegging Premises the Question Irrelevant False Analogy is a failed argumentPremises by analogy. Those rely on a high level of relevant Ad Hominem/Against the Person similarity. If you don’t Tu Quoque/Two Wrongs have that, yourGenetic Fallacy analogy Appealwill fail. to Ignorance Straw House Unacceptable Appeal to Emotion Premises Appeal to Popularity Argument Toolkit, Part 2 Unacceptable Premises Fallacies Hasty Generalization Formal FallaciesFalse Analogy Informal SlipperyFallacies Slope IrrelevantFalse Premises Dilemma UnacceptableBegging Premises the Question Irrelevant Slippery SlopePremises arguments assert inevitable conclusions when there
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