PHI 1101 Lecture 5: Chapter 5

• School: University of Ottawa
• Department: Philosophy
• Course: PHI 1101
• Professor: Sardar Hosseini

Document Summary

Categorical arguments and venn diagrams: common types of deductive arguments, argument based on mathematics: Ex: mark has twice as many cats as susan. Susan has 3 cats; therefore, mark has 6 cats: argument from de nition: Jackson is a liar, therefore, he doesn"t tell the truth: sentential (propositional) deductive arguments. Mp, mt, hs, ds, cd, conj, simp, add: categorical syllogism (cs) - evaluated using venn diagrams. Two premised argument (syllogism, 2 premises 1 conclusion) Made of 2 categorical statements: simple assertions the mind makes about categories, or classes of things. (statements starting with all, some, none, or every). Each statement usually includes 2 different categories. First category is called the subject (s) and the second is called the predicate (p) Always made of 2 categorical statements and 1 conclusion, but all categorical statements are made of 3 categories that are repeated twice. The process of creating a category or class is called categorization or classi cation.