PHI 1101 Chapter 0: Non-Deductive Arguments
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PHI 1101 Full Course Notes
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Validity when all the premises are true it would be impossible for the. There is no valid argument that has all true premises and a false conclusion. A valid argument can happen: conclusion to be false: all true premises, true conclusion, not all true premises, true conclusion, not all true premises, false conclusion. A valid argument with all true premises is called sound. No sound arguments are invalid, they must always be valid (true premises, true conclusion) Valid arguments have premises that imply the conclusion. Abc implies z - z follows from abc. Enough support to make it reasonable, ask this to the entire set premise separately. The strength of the conclusion determines how much support is required. Evaluating whether a claim is acceptable or not: Premise a is supporting premise b, how to assess relevance: Is it relevant or irrelevant or is relevance not obvious (needs more information as it could go either way)
