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Inverted spectra/Stalnaker: the recent discussion is about the relation between representational and qualitative content. - E.g. then we have different experiences when we both look at a ripe tomato, but the tomato seems to us both red - representational content: the representational content is the same for both! ((s) Both have the experience red) - ((s) So it is about language use) - Not about stimulus as something neutral). - StalnakerVsseparation of qualitative and representational content.
Inverted spectra/Intra-personnel/language/Stalnaker: E.g. Assuming Fred has reversed his spectrum over time, but his language use has adapted to it. - Then the qualitative content (that stays changed) cannot be identified with the intentional content. - Version: gradual change in small steps. - Important argument: then you cannot say in the end that the whole semantics is changed abruptly.
Ways a World may be Oxford New York 2003