ABSTRACT
Frank Jackson has presented a simple and powerful argument against physicalism [5, 6J. The physicalism that Jackson contests is the thesis that all correct informa tion is physical information. Jackson’s argument against this version of physicalism goes roughly as follows. Complete knowledge of physical information would not provide someone who never had the experience of seeing a certain colour with knowledge of what it is like to see the colour. From this Jackson infers that knowl edge of what an experience is like is knowledge of non-physical information. He concludes that not all correct information is physical information.
