 In the process of standardization, informal logics aim to untangle issues that obscure the structure and content of real life arguments. Arguments in ordinary discourse are, for example, frequently vague, ambiguous or in other ways unclear. Premises and conclusions can be conveyed by rhetorical questions (“Can anyone seriously believe...?” “Could the defendant have been in two places at once?”) and the key components of an argument may be interspersed with irrelevant digressions and repetition. When we extract an argument from the context in which it occurs, it can be important to recognize what is implicit but relevant at the same time that we discard what is explicit but irrelevant. 