Mary’s cognitive progress

Upon her release, Mary gains new knowledge aligned with B-type materialism and property dualism, even though she already possesses knowledge of all the facts and truths related to color and color vision during her time in captivity. I argue that this “cognitive progress” can only be accounted for by the acquisition of a new nonconceptual representation of the color red upon her release. Independently of any concepts, this acquisition already enables her to discriminate all sorts of shades of color within her environment. However, the existence of nonconceptual representations, by itself, is not enough to specify the type of knowledge Mary acquired, obviously. We must add two additional conditions. Firstly, the acquisition of these nonconceptual representations must enrich Mary’s preexisting physical concept of red. Assuming that concepts are mental files, the enrichment takes the form of housing information in analog format, like pictures of the color red. Secondly, by utilizing these enhanced concepts by analog information, Mary can achieve an introspective propositional knowledge. She learns the truth of the crucial proposition: she learns what it is like to experience red.