Philosophy Lexicon of Arguments

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Grue, philosophy: Artificial predicate in a thought experiment by Nelson Goodman (N. Goodman, Fact, Fiction and Forecast, Indianapolis, 1965) to illustrate his "New riddle of induction". An object x is grue iff x has been observed before time t and is green or has been observed after t and is blue, the time t being in the future. The problem of uncertainty as to whether something is green or grue arises because the set of green objects is a subset of the set of grue objects. See also induction, projectability, predicates.
 
Author Item Excerpt Meta data
Carnap, Rudolf
 
Books on Amazon
Grue IV 31
> Grue / CarnapVsGoodman: "red", etc. are purely qualitative predicates, - ’grue’, etc. are positional predicates - GoodmanvsCarnap: the distinction qualitative / positional is relative to a perspective on a respective base language. - This could also include grot / reen as basic predicates, then "red" and "green" would have to be interpreted in relation to a time - IV 32 then the attributions "qualitative" / "positional" was reversed - there is no perceptible color change: who understands "green" in the sense of "gred" understands understands "color" in the sense of "blolor": things of equal blolor are those which are gred etc.

Ca I
R. Carnap
Die alte und die neue Logik
In
Wahrheitstheorien, G. Skirbekk (Hg), Frankfurt 1996

Ca III
R. Carnap
Philosophie als logische Syntax
In
Philosophie im 20.Jahrhundert, Bd II, A. Hügli/P.Lübcke (Hg), Reinbek 1993

Ca IV
R. Carnap
Mein Weg in die Philosophie Stuttgart 1992

Ca VI
R. Carnap
Der Logische Aufbau der Welt Hamburg 1998

CA VII = PiS
R. Carnap
Sinn und Synonymität in natürlichen Sprachen
In
Zur Philosophie der idealen Sprache, J. Sinnreich (Hg), München 1982

Ca VIII (= PiS)
R. Carnap
Über einige Begriffe der Pragmatik
In
Zur Philosophie der idealen Sprache, J. Sinnreich (Hg), München 1982


> Counter arguments against Carnap



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Ed. Martin Schulz, access date 2017-03-29