Frank Jackson's knowledge argument and David Chalmers' conceivability arguments show that token physicalism is consistent with qualia being non-physical properties, undermining any claim it is necessary for physicalism.
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knowledge(Distinguished from mere true belief, which may be the product of indoctrination and need not exercise deliberative capacities.)
Justified true belief — true belief that has been arrived at through the exercise of deliberative capacities, including comparison of and deliberation among alternatives.
knowledge argument(A priori argument for anti-physicalism about consciousness)
An argument against physicalism that holds that the qualitative aspects of conscious experience cannot be fully captured by third-person physical accounts of brain processes
physicalism(The target position that the knowledge argument is designed to refute)
The thesis that physical theory can in principle account for everything there is to know about the world
qualia(The passage presents two competing definitions to contrast the views)
On the Cartesian picture: intrinsic qualities of inner ideas of which subjects are directly aware, necessarily shared by internal duplicates regardless of environment. On wide representationalism: representational contents of inner states whose nature is partly externally determined
token physicalism(Used here as condition (3) in a broader analysis of physicalism)
The thesis that if physicalism is true, every object or particular must be identical with some physical object or particular.