The Fallacy Detective: Thirty-Eight Lessons on How to Recognize Bad Reasoning

2009 Edition: More Fallacies, More Cartoons.

What is a fallacy? A fallacy is an error in logic -- a place where someone has made a mistake in his thinking.

A cloud is 90% water. A watermelon is 90% water. Therefore, since a plane can fly through a cloud, a plane can fly through a watermelon.

This is an easy book for learning to spot common errors in reasoning.

For ages twelve through adult.

Fun to use -- learn skills you can use right away.

Exercises with answer key.

Covers logical fallacies and propaganda techniques.

Peanuts, Dilbert, and Calvin and Hobbes cartoons.

Includes The Fallacy Detective Game.

2009 Edition introduces the special pleading and slippery slope fallacies and includes many new illustrations.

In 1999 Nathaniel Bluedorn and Hans Bluedorn decided to try to turn their interest in logic into a livelihood by starting FallacyDetective.com. Since then, they have written two books on logic for children and adults, The Fallacy Detective and The Thinking Toolbox.