Comment by tasty_freeze

I've never understood why Chalmer's reasoning is so captivating to people. The whole idea of p-zombies seems absurd on its face. Quoting the article:

(quote)

    His core argument against materialism, in its original form, is deceptively (and delightfully) simple:

    1. In our world, there are conscious experiences.
    2. There is a logically possible world physically identical to ours, in which the positive facts about consciousness in our world do not hold.
    3. Therefore, facts about consciousness are further facts about our world, over and above the physical facts.
    4. So, materialism is false.

(endquote)

Point 2 is textbook begging the question: it imagines a world which is physically identical to ours but consciousness is different there. That is baking in the presupposition that consciousness is not a physical process. Points 3 and 4 then "cleverly" detect the very contradiction he has planted and claims victory.