TASK 3 - FALLACIES + EVALUATION OF INFO Flashcards
fallacy
= defect in argument consisting in something other than false premises alone
- comprise mistakes in reasoning or creation of an illusion that makes a bad argument look good) –> unsound/uncogent
formal fallacy
= identified by examining FORM or STRUCTURE of an argument (only for deductive with identifiable form)
informal fallacy
= identified by examining the CONTENT
fallacies of relevance
= arguments in which they occur have premises that are logically irrelevant to the conclusion
fallacies of relevance
- appeal to force (argument ad baculum)
= threatens someone to accept conclusion; poses a conclusion to another person and tells that person implicitly/explicitly that some harm will come to him if he does not accept the conclusion
- always involves threat to physical/psychological well-being
fallacies of relevance
- appeal to pity (argument ad misericordiam)
= attempt to support a conclusion by evoking pity from the reader/listener
≠ arguments from compassion = evoke compassion on behalf of some person + supply info why person is deserving help
fallacies of relevance
- appeal to the people (argument ad populum)
= use desires (want to be loved, admired…) to get reader/listener to accept a conclusion
appeal to the people
- direct approach
= addressing a large group of people, excite emotions of crowd to win acceptance for conclusion
- evoke mob mentality (= large group)
appeal to the people
- indirect approach
= aim appeal to one or more individuals by focusing on some aspect of their relationship with the crowd
1) bandwagon argument = left behind/out if you do not support conclusion
2) appeal to vanity = associate conclusion with someone who is admired, so you will also accept it
3) appeal to snobbery = similar to 2
fallacies of relevance
- appeal against the person (argument ad hominem)
= response to an argument is directed at the person itself, not the argument
- place other person in bad light (2 arguers)
appeal against the person
- ad hominem abusive
= second person responds by verbal abusing
appeal against the person
- ad hominem circumstantial
= second person attempts to discredit opponent’s argument by alluding to certain circumstances that affect the opponent’s judgment
- ‘of course you would say that, just look at the circumstances’
appeal against the person
- tu quoque (you too)
= second arguer attempts to make the first appear to be hypocritical
- ‘how dare you say that, when you do it yourself’
fallacies of relevance
- accident
= when a general rule is applied to a specific case that it was not intended to cover
- general rule is cited in premises –> wrongly applied to specific case in conclusion
fallacies of relevance
- straw man fallacy
= distort opponent’s argument to be able to more easily attack it + to conclude that original argument has been demolished (2 arguers)
- exaggerate first person’s argument + make it look more extreme
fallacies of relevance
- missing the point (ignoratio elenchi)
= when the premises of an argument support one particular conclusion, but at the end a different conclusion, vaguely related to the correct conclusion –> support a conclusion but not the one that is drawn
- ignorance of proof: ignorant of logical implications of the premises –> draws conclusion that misses the point entirely
- not introducing new things
fallacies of relevance
- red herring
= divert attention of reader by changing the subject to a different but sometimes subtly related one + then draw a conclusion about this different subject OR merely presume that some conclusion has been drawn
(a) change subject without reader noticing it
(b) change subject to eye-catching topic that guarantees distraction (sex)
- generate new premises changing subject
- may be more on purpose
fallacies of weak induction
= connection between premises + conclusion not strong enough; evidence is not good enough to cause a reasonable person to believe conclusion
fallacies of weak induction
- appeal to unqualified authority (argument ad verecundiam)
= cited authority/witness lacks credibility