Philosophy: Philosophy of Logic: Informal Logic

Article in the Stanford Encyclopaedia of Philosophy, by Leo Groarke.

Entertaining article by Peter Suber discussing the rationality of a certain kind of rhetorical blocking strategy.

Atheism Web's guide to logic and fallacies in practical reasoning.

42 informal logical fallacies explained by Dr. Michael C. Labossiere, including examples.

A short article on informal fallacies from the Platonic Realms Interactive Mathematics Encyclopedia.

Site maintained by Stephen Downes, which catalogues over 70 logical fallacies together with examples and the criteria for determining when they have been committed.

Logical fallacies are presented with detailed explanations, multiple examples, and tips on avoiding them. Fallacies are organized by topic and alphabetically.

Emotional appeals, fallacies, manipulations, disinformation, misdirection, political correctness and the nature of truth. How some people get others to agree with their point of view, give them what they want, do what they ask and buy what they are selling.

Discusses various propaganda techniques, provides contemporary examples of their use, and proposes strategies of mental self-defense.

Offers an introduction to critical thinking whose main content is the description of fallacies, offering examples in daily life.

Explains and gives examples of logical fallacies from the media and everyday life, with references to sources.