Informal Fallacies

  1. Informal Fallacies
    fallacies that can be detected only by examining the content of the argument containing mistakes in reasoning or the creation of an illusion that makes a bad argument appear good
  2. Types of Fallacies
    • Relevance
    • Weak Induction
    • Presumption
    • Ambiguity
    • Grammatical analogy
  3. Fallacies of Relevance
    • share the common characteristic that the arguments in which occur have premises that are logically irrelevant to the conclusion
    • the connection is emotional (emotional appeal)
  4. Fallacies of Weak Induction
    • the connection btw premises and conclusion are not strong enough to support the conclusion
    • the premises provide at least a shred of evidence in support of the conclusion, but the evidence is not nearly good enough to cause a reasonable person to believe the conclusion
  5. Fallacies of Presumption
    the premises presume what they purport to prove
  6. Fallacies of Ambiguity
    arise from the occurrence of some form of ambiguity either in the premises or the conclusion (or both)
Card Set
Informal Fallacies
Phi 120 final