Final answer:
Representationalism proposes that Mary's knowledge is incomplete because she lacks the subjective experience of seeing color.
Step-by-step explanation:
Representationalism is a theory in philosophy of mind that holds that mental states, such as perceptions and thoughts, are representations of the external world. According to this theory, our experiences are not direct encounters with the world, but rather interpretations or representations of it.
In response to the Mary's room argument, representationalism would propose that even though Mary knows all the physical facts about color, her knowledge is still incomplete because she lacks the first-hand experience of seeing color. Representationalists would argue that there is something unique about the subjective experience of color that cannot be fully captured by physical facts alone.
For example, imagine a person who has never tasted chocolate but knows all the chemical components and reactions that occur when chocolate is prepared. This person might have a complete knowledge of the physical aspects of chocolate, but their knowledge would still be limited because they have never had the subjective experience of tasting it. In a similar way, representationalism suggests that Mary's knowledge about color would be incomplete without the first-hand experience of seeing color.