PHIL 110 Lecture Notes - Syllogism
Document Summary
Disjunctive proposition two simple propositions joined by or . Either fido ran away or fido got hit by a car. Inclusive or includes possibility of both being true. Exclusive or excludes it (one or the other) It will be inclusive or in this class. Take first disjunct p, second q. In a disjunctive syllogism, one premise is disjunctive, other two are simple. Fido ran away or fido got hit by a car. Because we use inclusive or, both can be true. If you put your hand in fire, (then) you will get burned. It"s impossible to put your hand in the fire and not get burned. If p then q p q ( if p then q ) If you study hard, you get all a"s. If you get all a"s, you get a scholarship. If you study hard, you get a scholarship. Symbolize: p q q r p r.
