4 Ordinary Exact Intro

4 Ordinary Exact Intro - Exact Class vs. Ordinary Language...

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Exact Class vs. Ordinary Language Exact class language is abstract Exact class language obeys the law of excluded middle That is, something either is or is not a member of the “set” or “class” There is no such thing as “almost” or “sometimes”
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Ordinary Language Ordinary language terms are meant to be pliable Their meanings may change from time to time Consequently they do not obey the law of excluded middle
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Some examples Terms that are defined in time and space are ordinary terms: World War II--this term is ONLY defined in terms of time and space--it is unique Texas A&M University--this is ordinary because it’s meaning changes over time; Texas A&M of 1945 is different from Texas A&M of 2004
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Some examples (2) Terms that are not defined in time and space are exact class terms Global conflict--if properly defined (abstractly) this term in NOT space, time dependent It could refer or be tested with instances from World War II It could refer to instances in the future
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This note was uploaded on 04/02/2008 for the course PSYC 205 taught by Professor Sell during the Spring '08 term at Texas A&M.

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4 Ordinary Exact Intro - Exact Class vs. Ordinary Language...

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