Welcome to LingLogicWiki,
a wiki about logical fallacies that anyone can edit. Check out the first entry, Personal Attack (ad hominem), to get an idea of the style and content of the entries.


This wiki is a project of the fall 2009 and spring 2010 sections of Linguistics 21 at San Jose State University and of the spring section of the spring 2010 section of Humanities and Communication 213 at California State University, Monterey Bay. Anyone is welcome to help make it better. The links below lead to illustrations and discussion of different logical fallacies. The first illustration for each is an internet ad from the 2008 Proposition 8 debate in California.

Informal Fallacies

  1. Accident
  2. Appeal to ignorance
  3. Appeal to pity (ad misercordium)
  4. Appeal to the People (Bandwagon) (ad populum)
  5. Attacking the motive
  6. Begging the question (petitio principii)
  7. Complex (loaded) question
  8. Composition/division
  9. Equivocation (semantic fallacy)
  10. False dichotomy
  11. Hasty generalization
  12. Inappropriate appeal to authority
  13. Inconsistency
  14. Look who’s talking (tu quoque)
  15. Missing the point
  16. Personal Attack (ad hominem)
  17. Questionable (false) cause
  18. Red herring
  19. Scare tactics (ad baculum)
  20. Slippery slope
  21. Straw man
  22. Suppressed evidence
  23. Two wrongs make a right
  24. Weak analogy

Formal Fallacies

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