"The knowledge argument aims to establish that conscious experience involves non-physical properties. It rests on the idea that someone who has complete physical knowledge about another conscious being might yet lack knowledge about how it feels to have the experiences of that being. It is one of the most discussed arguments against physicalism."
"What follows is an overview of the literature on the KA [Knowledge Argument]. I will begin in section 1 with a sketch of the KA, followed by a discussion of the historical background in section 2. In section 3, the third and longest section, I will provide a taxonomy of objections to the KA, along with brief descriptions of them. In section 4 I will compare the KA to related arguments. I will close in section 5 by briefly raising a question about the extent to which the KA can be generalized."