Blackburn Chap 6

Blackburn Chap 6 - Also is reduction ad absurdum which is...

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Sam Haider 7/12/06 PL0022: Intro to Philosophy Estlund Reasoning Blackburn, Chapter Six The reasoning chapter dealt a lot with logic which I feel is a topic one should be fundamentally sound in. Understanding logic is important, because it gives someone the ability to break down an opponent’s argument in a debate by finding fallacies. The basic model of a very well known argument, modus ponendo ponens, says ‘p, if p than q, q’. Next, truth tables study the validity of the premises individually, and determine what that concludes about the conclusion. Semantic tautology is the determining validity from truth table logic.
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Unformatted text preview: Also is reduction ad absurdum, which is also used in math for the purpose of ‘indirect proofs’, where the mathematician must assume one aspect to be true, then complete the proof to show at the end that it contradicts the original premise or contains an absurdity, such as a square circle. Reduction and contradiction is also a good argument form to use. What also comes into play is language; the diction of a philosopher can have many implications. The way implications are made is called pragmatics, while the structure of information is known as semantics....
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This note was uploaded on 06/09/2008 for the course PHIL 101 taught by Professor Nagel during the Spring '08 term at Brown.

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