I am very interested in the concept of the Philosophical Zombie, though after

I am very interested in the concept of the Philosophical Zombie, though after

I am very interested in the concept of the Philosophical Zombie, though after doing some research, I see that it is an argument against Physicalism. This I don't understand. I can't seem to wrap my head around why this is so. Would someone be able to explain this better and more clearly than what I read on Wikipedia? Best, Aron G.

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