Yes, this is old hat. See also my post on Misusing Kripke/Putnam, which explicitly explains why the analogy to ‘water = H2O’ (and similar a posteriori identities, like heat = molecular motion) is no help to the physicalist here.
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Yes, this is old hat. See also my post on Misusing Kripke/Putnam, which explicitly explains why the analogy to ‘water = H2O’ (and similar a posteriori identities, like heat = molecular motion) is no help to the physicalist here.