Philosophy Lexicon of Arguments

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    More concepts for author
Carnap, Rudolf Grue   Carnap, Rudolf
Chomsky, Noam Grue   Chomsky, Noam
Putnam, Hilary Grue   Putnam, Hilary
Stalnaker, R. Grue   Stalnaker, R.

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