Premise 2: Upon Mary's release, she has a new experience of the world that allows her to acquire knowledge. Premise 3: Mary does not know all the physical facts of the world. Conclusion: Therefore, not all physical facts are known, so not all properties are equally physical. This is important because it shows that physicalism is false. Physicalism is the idea that the world consists only of physical properties. Property dualism rejects physicalism. This is therefore an important argument for property dualism, because Jackson's thought experiment shows that there are both mental and physical properties. Another reading discussed was that of Chalmer's philosophical zombies. These zombies are described as exact replicas of normal humans but lack qualities. The resulting argument is as follows Zombie PowerPoint (slide 2): Premise 1: It is conceivable that there are zombies. Premise 2: If this is the case, then it is possible that there are zombies. Premise 3: If this is the case, then consciousness is not physical. Conclusion: Thus, consciousness is not