PP201 Final: PP201 Exam Review
Document Summary
Standard form: some animals are things that have fuzzy ears. The subject is undistributed and the predicate is undistributed. Middle: dogs: there are three rules for evaluating the validity of categorical syllogisms, at least one of the premise must distribute the middle term. If a term is distributed in conclusion, it must also be distributed in at least one premise: number of negative claims must be the same in the premises and conclusion. Being a rose is necessary for having thorns. Having thorns is suf cient for being a rose. All things with thorns are roses - equivalent statement. Some thing that has thorns but is not a rose, a hawthorn - counterexample. Things with thorns: in if then statements if signals suf cient, then signals necessary, antecedent (comes before): part of conditional claim that follows the word if , consequent (comes after): second part that follows the word then .
