How are we to define colors? I have two suggestions, but I don’t know where to go from here: (1) they could be defined based on the particular subjective experiences (particular qualia) themselves or they could be defined based on the descriptor or color attribute that one applies to an object. For example: does the sky appear blue to me if and only if the sky gives rise to a particular color experience or does the sky appear blue to me just in case I (or a society) attribute “blue” to the sky regardless of the actual experience that I (we) have? Under the first definition, we only agree that the sky is blue if we actually share the same color experience whereas the second definition does not require this subjective similarity.
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