Ideas from 'Inverted Earth' by Ned Block [1990], by Theme Structure

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15. Nature of Minds / B. Features of Minds / 5. Qualia / b. Qualia and intentionality
The Inverted Earth example shows that phenomenal properties are not representational
                        Full Idea: Block's Inverted Earth example (with matching inversion of both colours and colour-language) tries to show a variation of representational properties without a variation of phenomenal properties, so that the latter are not constituted by the former.
                        From: report of Ned Block (Inverted Earth [1990]) by Mark Rowlands - Externalism Ch.7
                        A reaction: (The example is actually quite complex). This type of argument - a thought experiment in which qualia are held steady while everything else varies, or vice versa - seems to be the only way that we can possibly get at an assessment of the role of qualia.