Frank Jackson:

What Mary Didn’t Know

Jackson’s Knowledge Argument

(1)Physicalism is the challenging thesis that the actual world is entirely physical.

(2)Thus under physicalism, complete physical knowledge is the complete knowledge of the actual world.

(3)However, a physicist Mary could know all there is to know about the physical nature of the world, while not knowing the qualia of others’ experiences.

(4)Hence, physicalism is false. (més…)