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#bleen #philosophical definition #nelson goodman #grue #formal logic #predicate logic #time variance #rule based color

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#bleen #nelson goodman #epistemology #new riddle of induction #grue #concept definition

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#bleen #grue #nelson goodman #noitcudni #philosophy of science #time predicate #color term #conceptual change

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#bleen #blue green #blended color #intermediate color

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#bleen #blue green mix #color question #undefined color #emergent color