PHIL 1000 Lecture Notes - Lecture 3: Disjunctive Syllogism, Hypothetical Syllogism, Syllogism
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Arguments: deductive (necessary reasoning, inductive (probabilistic reasoning) Logic is the study, not factual content, but evidential relations between premises and conclusion of arguments. Conclusion relates, or purports to relate, to premises in a way that the conclusion is necessitated by the premises. All or nothing: conclusion either follows or not. Humans are mortal, i am human, i am mortal. I am taller than tim, tim is taller than sue, i am taller than sue. Either bob went to the store or pub, bob didn"t go to the store, bob is at the pub: inductive arguments. The conclusion relates, or purports to relate, to the premises in a way that premises provide probable support for conclusion. Probabilistic reasoning: purports to suggest the truth or conclusion. Strong vs weak evidence: the strength of suggestion varies in degree. Tomorrow is friday, you"re normally happy on.
