PHIL 101 Lecture Notes - Lecture 26: Natural Deduction, Truth Table, Abbreviation
2 Dec 2016
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Takes you through steps where each step is based on a principle or rule each step is clear and obviously valid. Truth table does not tell why or how someone developed their argument natural selection does. Hs (hypothetical syllogism) p > q q > r / p > r. Ds (disjunctive syllogism p v q ~p / q p v q ~q / p. Either one holds true due to duality of v. Note: small letters (e. g. p or q) may be representative of any statement even if the statement contains other small letters. Ex (h v j) v k ~(h v j) / k (h v j) is equivalent to p and k is equivalent to q in thise case. 3. (b * c) > d (b * c) v a. 3. (b * c) > d (b * c) v a letter a occurs here. Describe immediate logical environment of the conclusion in the premises.
