PHI 1101 Study Guide - Venn Diagram, Syllogism
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PHI 1101 Full Course Notes
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In categorical reasoning the statements, or claims, of interest are categorical statements. Categorical statements make simple assertions about categories, or classes, of things. All s are p. (all cats are carnivores. ) No s are p. (no cats are carnivores. ) Some s are p. (some cats are carnivores. ) Some s are not p. (some cats are not carnivores. ) All students are trouble-makers. " students section shaded. No a-students are slackers. " middle section shaded. Some professors are not mean. " astrics professor section conclusion must be true. diagram method: a valid categorical syllogism is such that if its premises are true, then its. We can check the validity of categorical syllogisms using the venn. Drawing a circle for each term in the argument, and diagramming the premises on these circles. (always have 3 terms in the argument) If, after representing the premises, the conclusion is already represented on the diagram, then the argument is deductively valid. ".
