|Adequacy: in logic a complete and correct calculus is adequate - Empirical adequacy of statements can only be found in relation to theories (as opposed to truth).|
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Adequacy/Millikan: by making our judgments interact with those of others in a community, we have additional evidence that they are appropriate. Thus new concepts are developed, which can be tested independently of theories, or not.
Concepts/Adequacy/Millikan: when they are adequate, concepts exercise their eigenfunction in accordance with a normal explanation. Their eigenfunction is to correspond to a variant of the world. An adequate term produces correct acts of identification of the referents of its tokens.
R. G. Millikan
Language, Thought, and Other Biological Categories: New Foundations for Realism Cambridge 1987