PHIL 2003 Lecture Notes - Lecture 4: Neuropeptide Y, Immanuel Kant, Galanin
23 Oct 2017
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These diagrams are referred to as structure diagrams, or argument trees. They are very helpful in understanding arguments: steps in constructing structure diagrams, number all the statements or claims made in the passage. Identify and cross out any parts of the passage that are not part of the argument: draw the structure diagram, conventions for diagrams, premises are always put above and conclusions below, the direction of inference is always downward. When the lines lead separately to the conclusion, this means each premise by itself provides good reason to accept the conclusion. First, we know that many innocent people have been executed in the past. Second, the death penalty does not help to deter murder. Only when taken together do they support the conclusion. Initial premise: there is a line leading down from the premise but no line above leading down to it i. e. no support is being offered for this premise.
