A fallacy is some kind of defect in an argument and may be either intentional (aimed at deceiving) or, more commonly, unintentional. A formal fallacy is an invalid type of argument.

Some are errors of logic (known as "formal" fallacies), while others are about the misuse of language and evidence (" informal" fallacies) – but the consequence is always a faulty argument.

At the New York State Bar Association Journal (July-August 2016), Acting Justice Gerald Lebovits explains and illustrate 21 formal fallacies. You can access his article here. (ljs) ...

An Illustrated Book of Bad Arguments identifies 20 logical fallacies that pop up everywhere. Because it’s so short and entertaining, it’s more than just a must-read, it’s a “have-to-read ...