PHIL 121 Lecture Notes - Lecture 8: Logical Reasoning
6 Jul 2017
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Argument analysis: argument reconstruction, argument evaluation, check structure: determine wither the argument is well-formed. well formed argument: an argument that is either valid or cogent, check premises: determine whether the argument is strong. two concepts relevant: Key points: requires deductive validity and reasonable premises, varies according to the reasonableness of all the presmise, varies from person to person, depending on their evidence. Sidebar: circular arguments strength: depends on how reasonable it is to believe premises. soundness: valid argument with true premises. ex: Secretary of state: they"re what they use to make brawndo! Secretary of defense: [raises hand after pause] because brawndo"s got electrolytes. valid and strong, but useless and unhelpful. It is rational or reasonable to believe the conclusion of an inductively strong argument. better question: why do we even need this third clause? distinction between defeated arguments and inductively strong arguments.
