Edited sentence: If there is no one accepted definition of the subject, then the definition must be understood in context, or defined in the initial argument for the discussion at hand.Religious individuals, for example, might employ this fallacy.Similarly, a Muslim might respond to terrorist acts by saying that the perpetrator was not a "true Muslim.The statement "no true Christian" would do some such thing is often a fallacy, since the term "Christian" is used by a wide and disparate variety of people.This broad nature of the category is such that its use has very little meaning when it comes to defining a narrow property or behaviour