Philosophy Lexicon of Arguments

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Geach, Peter T.
 
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Someone I, 7ff
"f(any)": "f(a) or f(b)" - "f(one): "either "f(a) or "f(b) - problem: in some contexts, this does not make a difference: kissing/marrying - E.g.: (all every boy) love anyone:: same truth value as John and Tom love Mary or both love Jane - but not both love M or J -
E.g. everyone (any boy) loves a ..: same truth value as John loves one and Tom loves one .., or "J l M v K and T l M v K" but also "anybody l M v K" and so also: "(J l M v K) and (T l M v K)" - GeachVs: the whole breaks together! - solution: Strawson: single rules for each case - Geach: solution: Bracketing: a) "every boy (loves some girl)" - b) "(every boy loves) some girl" - correct in the case: "for every boy there is a ... "- 2. (Ey) (x) (x loves y).
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I 117
Somebody/everyone/one: applicative expressions/E. Johnson: is added to events such as "an astronomer", "every man," etc. - "expressive expressions" are a subclass of aA - correspond to quantifiers - (Quines 2nd insight) VsTradition: aA are not to be analyzed as relative clauses - e.g. "Socrates had a dog and he bit Socrates": false; not conjunction of two sentences and then ask for reference of "he" - "this dog" does not help at all! - Conjunction does not work because negation of both sentences does not have any contradiction: "... did not own a dog or he did not bite Socrates".

Gea I
P.T. Geach
Logic Matters Oxford 1972


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Ed. Martin Schulz, access date 2017-04-24