"The Fallacy Files Taxonomy is a tree-like structure that classifies all of the fallacies in these files by the sub-fallacy relation. A sub-fallacy, which is a specific version of a more general fallacy, has whatever features the more general fallacy has, together with specific features which set it apart and make it worth naming in its own right. For example, instead of grouping together 'fallacies of relevance', there is one most general such fallacy—namely, Red Herring—and all fallacies of relevance are sub-fallacies of it. Red Herring is itself a sub-fallacy of Informal Fallacy, which is a sub-fallacy of the most general logical fallacy of all: Logical Fallacy. Logical Fallacy is, thus, the top node of the Taxonomy, for every fallacy in the Taxonomy is a sub-fallacy of it. The sub-fallacy relationship is like a tree with a trunk―Logical Fallacy―which branches until it reaches leaves, that is, fallacies which have no sub-fallacies―for example, Appeal to Celebrity."