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Legality/Identification/Identifiability/Individuation/Law/legal/Millikan: Properties are identifiable only because they are involved in legal procedures.
Substances: are only identifiable because they have properties.
Concept/Test/Millikan: is it necessary to make inferences of sentences in which tokens of concepts occur, in order to test the theory?
Knowledge: we need knowledge about the use of concepts in actions, not in conclusions. And that would be impossible if the facts did not occur in laws.
N.B.: But it does not follow that we need to know these laws at all. For example, to distinguish between red and green, we need to know no law of optics. I could do it anyway before I learned any law.
Conviction/belief/Millikan: I can also develop beliefs about objects without having developed any theories about the entities of which the concepts are about in my beliefs.
R. G. Millikan
Language, Thought, and Other Biological Categories: New Foundations for Realism Cambridge 1987