Frank Jacksons Knowledge Argument Against Physicalism

1. Mary knows all the physical facts. 2. Mary is a perfect reasoner. 3. Yet Mary cannot deduce all the facts. 4. So, physicalism is false. John Locke said something similar: yet, I think, it will be granted easily that if a child were kept in a place where he never saw any other but black and white until he were a man, he would have no more ideas of scarlet or green than he who from his childhood never tasted an oyster or a pineapple has of those particular relishes John Locke, An Essay Concerning Human