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    Inverse View

    It is not the case that Anti-functionalist physicalists lack a principled reason to reject inverted qualia between functional duplicates while accepting that inverted qualia between molecule-by-molecule duplicates are metaphysically impossible.

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    Reasons For

    1 perspective
    Reason for
    ?
    • 1.It is just as easy to imagine inverted qualia in molecule-by-molecule duplicates (in the same external, physical settings) as it is to imagine inverted qualia in functional duplicates.
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    • 2.Physicalists are committed to claiming that inverted qualia in molecule-by-molecule duplicates are metaphysically impossible.
      ?

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    • 3.No convincing argument has been presented to show that the case of molecule-by-molecule duplicates and the case of functional duplicates are disanalogous with respect to inverted qualia.
      ?

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    Reasons Against

    2 perspectives
    Reason against 1 of 2
    ?
    • 1.Physicalism entails that mental properties supervene on physical properties, making molecular duplicates in identical environments nomologically identical in all mental respects.
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    • 2.Functional organization, unlike molecular constitution, is multiply realizable across physically distinct substrates, meaning functional identity does not guarantee physical identity.
      ?

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    • 3.Since inverted qualia require qualitative divergence without physical divergence, they are coherent only where physical identity is not already guaranteed—as in functional but not molecular duplicates.
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    Reason against 2 of 2
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    • 1.Ned Block's distinction between access consciousness and phenomenal consciousness shows that functional role can be preserved while phenomenal character varies, grounding the functional inversion case.
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    • 2.No parallel distinction operates at the molecular level: if two systems share every microphysical property in the same environment, Leibniz's Law entails they share every property, including phenomenal ones.
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    • 3.The anti-functionalist physicalist thus has a principled asymmetry: molecular identity forecloses qualitative divergence via supervenience, while functional identity alone does not.
      ?

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