Quickly register to comment, Ask questions, and/or keep up to date on new fallacies.

one moment please...


  Get the Book!

Get the book, Logically Fallacious by Bo Bennett, PhD by selecting one of the following options:

Get It!

(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.

Registered User Comments

 Copyright 2017, Archieboy Holdings, LLC.