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.
 
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I 81
grue / grueness / Stalnaker: is no region in logical space - logical space: principle: all relations must be grounded in intrinsic properties.

Sta I
R. Stalnaker
Ways a World may be Oxford New York 2003


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Ed. Martin Schulz, access date 2017-05-27