PHI 103 Lecture Notes - Lecture 5: Venn Diagram, Syllogism
Document Summary
Suppose you have a paper topic and you are required to prove a categorical syllogism is valid by means of a venn diagram. Now suppose that you have no idea how to construct a venn diagram for a paper. It is the diagram that kept popping up for your first examination. You have three interlocking circles with the numbers 1-7 showing up in each area of the circles. Everyone has agreed to put 1 in a particular region, 2 in a particular region, and so on. We would not provide any shading and we would not draw in any x. Instead, we would give the numbers for the regions that are shaded and we would give the numbers for the regions in which the x would appear. For this syllogism, we would say this: shade regions 2 and 3. The x appears on the line between regions 6 and 7.
