May faulty logic undermine your entire philosophy An introduction to Logical Fallacies Logical Fallacy A fault or flaw in an argument Formal fallacy flaw in structure of the argument If Chris strangled his teacher then he must be a criminal ID: 430853
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Slide1
UTINAM LOGICA FALSA TUAM PHILOSOPHIAM TOTAL SUFFODIANT!May faulty logic undermine your entire philosophy!
An introduction to Logical FallaciesSlide2
Logical FallacyA fault or flaw in an argumentFormal fallacy – flaw in structure of the argument
If Chris strangled his teacher, then he must be a criminal
Chris is a criminal
Therefore he strangled his teacherSlide3
Informal FallaciesAn informal fallacy is an argument that persuades by means other than reasonThree categories:Fallacies of Relevance
Fallacies of Presumption
Fallacies of AmbiguitySlide4
ExamplesKanye West has a new line of clothing an the average price of a shirt is $300.00. His clothing must be of the highest qualityAlex never comes to class therefore his opinion does not count
Gina was late to class because the cafeteria line was too long. The cafeteria needs be better staffed so students can get to class on time
“Did you hand in your assignment? It doesn’t matter that Jack is stabbing Charlie in the corner… I need to get your assignments on time in the future!”Slide5
ExamplesKanye West has a new line of clothing an the average price of a shirt is $300.00. His clothing must be of the highest quality
Argumentum ad
verecundium
Alex never comes to class therefore his opinion does not count
Argumentum ad HominemSlide6
Gina was late to class because the cafeteria line was too long. The cafeteria needs be better staffed so students can get to class on timePost hoc ergo propter hoc“Did you hand in your assignment? It doesn’t matter that Jack is stabbing Charlie in the corner… I need to get your assignments on time in the future!”
Fallacy of accidentSlide7
Fallacies of RelevanceArgumentum ad HominemArgumentum ad BaculumArgumentum ad
Populum
Argumentum ad
Verecundium
Argumentum ad
MisericordiaSlide8
Fallacies of PresumptionPetitio Principii (Begging the question)
Fallacy of Accident
Post hoc ergo propter hoc (False cause)
Ignoratio
elenchi
(Irrelevant conclusion)
Either/Or Fallacy (Fallacy of dilemma)
Slippery SlopeSlide9
Fallacies of AmbiguityEquivocationAmphibolyCompositionDivision
Argumentum ad
Ignoratium
(appeal to lack of evidence)
Straw man argumentSlide10
Fallacies are HilariousA journey into IdiocracySlide11
The Slippery Slopehttps://www.youtube.com/watch?v=icmRCixQrx8Slide12
Petitio Principii (Begging the Questionhttps://www.youtube.com
/
watch?v
=3boy_tLWeqASlide13
Argumentum ad Hominemhttps://www.youtube.com/watch?v=kn200lvmTZc
What other fallacies can you find in this video?Slide14
What fallacies do you see here?https://www.youtube.com/watch?v=sGUNPMPrxvASlide15
Fallacy of Accident