**Tags**

Argument from Fallacy, fallacies, fallacy, formal fallacies, formal fallacy, Masked Man Fallacy, Probabilistic Fallacies, Propositional Fallacies, Quantification Fallacies, Syllogistic Fallacies

A **formal fallacy** is a pattern of reasoning which is rendered invalid due to a flaw in its logical structure which can neatly be expressed in standard system of logic, for example propositional logic. An argument that is formally fallacious is always considered to be wrong. Formal fallacies do not take into account the soundness of an argument, but rather its validity. Formal fallacies can also be referred as deductive fallacies.

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