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Content/Peacocke: mental states have content - sensation: it is fundamental - Experience: is itself a psychological condition in its own right.
Mental state/Peacocke: to think that it’s cold, does not cause the judgment that it is cold
Immaterial/material/Peacocke: a mental state may consist in a concentration of any "substance" in neurons, or, otherwise: in a distribution.
Chr. R. Peacocke
Sense and Content Oxford 1983