Philosophy 1200 Chapter Notes -Modal Logic, Confirmation Bias, Confidence Interval
14 Sep 2013
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Argumentation is a rational practice. arguing is a process of showing reasonableness of an assertion the presentation of a collection of premises that are rationally persuasive of a conclusion, ie. premises make it reasonable to accept the conclusion. Arguments are linguistic or logical objects. looks at the truth of the premises and their logical relation to the conclusion soundness: validity: premises true = conclusion true all premises are true. Logic once though to be univocal: only a single meaning or interpretation. Law of identity: p if and only if p. Law of non-contradiction: not both p and not-p. Rules say that prisoners (p) aren t allowed to vote. A repentant prisoner (p and q) is a prisoner (p). Therefore, eric and ellen are both doctors. (p and q) Therefore, either foxes are mammals or cows are mammals. Therefore, either foxes are mammals or lizards are mammals. If the dollar is devalued, exports will rise. (if p, then q)
