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Figure 3 | Diagramming the self-esteem argument In this example, argumentation schemes can be used to fill in the unstated premises and to link them together with other premises and conclusions in a chain of argumentation that represents Helen’s line of argument. Walton (1996) identified twenty-five argumentation-schemes. The argumentation scheme that can be used in the case of the example is called argument from expert opinion. It is represented as follows: