PHL 214 Chapter Notes - Chapter 3: Hypothetical Syllogism, Disjunctive Syllogism, Logical Form
20 Aug 2018
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A deductive argument is intended to provide conclusive support for its conclusion. Chapter 3: making sense of arguments: a deductive argument that succeeds in providing conclusive support for its premises is said to be valid. [premise] abortion is the taking of a human life. [premise] the taking of a human life is murder. If the premises are true, the conclusion must be absolutely, positively true. You may or may not agree with the premises, but it is impossible for the premises to be true and the conclusions to be false. And the order of the premises make no difference. The conclusion does not follow logically from the premises. Each is an attempt at a deductively valid argument, but the attempt fails even if the premises were true, they would not guarantee that their conclusions are true. An argument with a conclusion that is obviously true can be invalid if that conclusion is not supported by the premises offered.
