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  • False Conversion
  • False Dilemma
  • False Effect
  • Far-Fetched Hypothesis
  • Faulty Comparison
  • Gambler’s Fallacy
  • Genetic Fallacy
  • Hasty Generalization
  • Having Your Cake
  • Hedging
  • Historian’s Fallacy
  • Homunculus Fallacy
  • Hypnotic Bait and Switch
  • Hypothesis Contrary to Fact
  • The Fallacies: If–Mu
  • If-By-Whiskey
  • Illicit Contraposition
  • Illicit Major
  • Illicit Minor
  • Illicit Substitution of Identicals
  • Inconsistency
  • Inflation of Conflict
  • Jumping to Conclusions
  • Just Because Fallacy*
  • Just In Case Fallacy
  • Least Plausible Hypothesis
  • Limited Depth
  • Limited Scope
  • Logic Chopping
  • Ludic Fallacy
  • Lying with Statistics
  • Magical Thinking
  • Meaningless Question
  • Misleading Vividness
  • Missing Data Fallacy*
  • Modal (Scope) Fallacy
  • Moralistic Fallacy
  • Moving the Goalposts
  • Multiple Comparisons Fallacy
  • The Fallacies: Na–Ri
  • Naturalistic Fallacy
  • Negating Antecedent and Consequent
  • Negative Conclusion from Affirmative Premises
  • Nirvana Fallacy
  • No True Scotsman
  • Non Sequitur
  • Notable Effort
  • Overwhelming Exception
  • Package-Deal Fallacy
  • Poisoning the Well
  • Political Correctness Fallacy
  • Post-Designation
  • Prejudicial Language
  • Proof by Intimidation
  • Proving Non-Existence
  • Quantifier-Shift Fallacy
  • Quantum Physics Fallacy*
  • Questionable Cause
  • Rationalization
  • Red Herring
  • Reductio ad Absurdum
  • Reductio ad Hitlerum
  • Regression Fallacy
  • Reification
  • Relative Privation
  • Retrogressive Causation
  • Rights To Ought Fallacy*
  • The Fallacies: Sc–Wi
  • Scapegoating
  • Selective Attention
  • Self-Sealing Argument
  • Shoehorning
  • Slippery Slope
  • Special Pleading
  • Spiritual Fallacy*
  • Spotlight Fallacy
  • Statement of Conversion
  • Stereotyping
  • Stolen Concept Fallacy
  • Strawman Fallacy
  • Style Over Substance
  • Subjectivist Fallacy
  • Subverted Support
  • Sunk-Cost Fallacy
  • Suppressed Correlative
  • Texas Sharpshooter Fallacy
  • Tokenism
  • Two Wrongs Make a Right
  • Unfalsifiability
  • Unwarranted Contrast
  • Use-Mention Error
  • Weak Analogy
  • Willed Ignorance
  • Wishful Thinking
  • Inconsistency

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    (also known as: kettle logic [form of], internal contradiction [form of], logical inconsistency [form of])

    Description: In terms of a fallacious argument, two or more propositions are asserted that cannot both possibly be true.  In a more general sense, holding two or more views/beliefs that cannot be all be true together.  Quotes from Yogi Berra (even if apocryphal) are great examples of fallacies, especially inconsistencies.

    Example #1:

    "I never said most of the things I said." - Yogi Berra

    Explanation: I know this requires no explanation, and I don't mean to insult your intelligence, but for consistency's sake, I will explain.  If he had said those things, then he said them, which is a contradiction to his claim that he never said them.

    Example #2:

    "Nobody goes there anymore.  It's too crowded." - Yogi Berra

    Explanation: Again, I apologize, but here it goes... If "nobody" went there, then it could not possibly be crowded, since "crowded" implies too many people are there.

    Exception: One needs to be able to explain how the beliefs are not inconsistent.

    Tip: Think about your beliefs.  Are there any inconsistent with each other?  With how you act and what you do?

    Variation: The internal contradiction is a blatant contradiction in the same argument (thus “internal”).

    I never had sexual relations with that woman -- but it sure was nice!

    Kettle logic is usually multiple, contradicting arguments, supporting a single point.  In an example used by Sigmund Freud in The Interpretation of Dreams, a man accused by his neighbor of having returned a kettle in a damaged condition offered three arguments:

    That he had returned the kettle undamaged;

    That it was already damaged when he borrowed it;

    That he had never borrowed it in the first place.

    A logical inconsistency usually refers specifically to inconsistencies in formal, or deductive, logic.

    Ted is older than Sam.  Bill is older than Ted. Sam is older than Bill.

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