PHIL 230 Lecture Notes - Lecture 3: Red Delicious, False Premise

• School: Cal Poly
• Department: Philosophy
• Course: PHIL 230
• Professor: Frank E.Pilling

Document Summary

Argument 1: all apples are composed of organic molecules, red delicious apples are apples. Red delicious apples are composed of organic molecules: all a"s are b"s, x is an a. Argument 2: only those who have matriculated at cp can register for cp courses, todd long has matriculated at cp. Todd long can register for cp courses: only a"s are b"s, x is an a. The validity test: assume that all the premiss are true, ask yourself is it possible for the conclusion to be false. If yes then it fails the test. If no then it passes the test. Argument 2 is invalid: the word only does not equate to any. Only males are fathers versus all males are fathers. The conclusive premises test: argument 3, all pigs can y, john is a pig. If no, then the argument passes: argument 1 passes this test. No actual reason to nd it false.