Win said:
A general note on what it means for a p-zombie to be "indistinguishable" from a person.
I am incapable of distinguishing whether any given individual I might meet is a p-zombie or a person. On the other hand, I know I'm not a p-zombie. Therefore a p-zombie and a person are not indistinguishable in principle, because I can tell the difference as regards myself. And so can you.
Win,
Please correct me if I'm wrong, but I seem to recall that you or someone else has said that a p-zombie would be a p-zombie but wouldn't know it. If so, then how do you know you're not a p-zombie?
I suspect your response, if my premise is correct, is that because you see the visual field right there in front of you. Well, that gives you first-person justification for believing it. Everyone else could simply be lying about having first person subjective feel. Right? Couldn't you be the only human on a planet of p-zombies? Yep, in principle. Yet, you don't operate on this principle, I presume. Why not? Is it because p-zombies are silly? Is it because you are a pragmatist deep down, as am I?
Are there really any practicing dualists?
I will try my best to bring greater clarity to my expositions of Chalmers's work in future. 
Yes, you wouldn't want a bunch of fuzzy thinking students misquoting you, would you?
In what way is the concept "incoherent?" What could you mean by that? Or is the burden on me to demonstrate the "coherence" of the concept?
Well, as I understand it, p-zombies are used to demonstrate the falsity of materialism. If so, then we have to suppose at the beginning that materialism is true. Therefore, we are working from a materialistic framework.
Within a materialistic framework, p-zombies are incoherent by their very definition. As I understand it, a p-zombie is exactly like a human in every physical way, down to the last detail within his brain, and he walks and talks exactly like a human, except for one crucial distinction: a p-zombie lacks the first-person subjective experience, or "feel" that every human presumably has.
Within a materialistic framework, consciousness must be a necessary consequence of the physical brain processes and its structure. Yes, of course this is a bare assertion without definition proof. It is implied by the very notion of materialism.
Remember, we have assumed materialism to be true in our p-zombie proof. If consciousness, meaning the first-person subjective "feel," is a necessary consequence of the fully functioning human brain, then the p-zombie is also conscious. He cannot lack that which is a necessary consequence of having a fully functioning brain simply because we declare that he lacks it. That is the bit of incoherence inherent in the definition of p-zombie. He cannot lack what he must have.
Is that a bootstrap argument for materialism? Sure it is. What it is not, however, is a demonstrable proof that materialism is false, as I understand it is asserted to be.
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Now, switch to a dualist framework, be it property or interactive dualism. Now, p-zombies can be defined and still be coherent. If consciousness resides elsewhere from the purely physical, material brain--either in "mind" stuff, that special property of mind matter, or in a mental realm which is somehow connected with the material realm through a mysterious interaction process--then p-zombies can be exactly like humans, only without the mind stuff or connection to the mental realm. Now, p-zombies make perfect sense.
There is nothing wrong with p-zombies, given a dualist paradigm. In order for p-zombies to be coherent, however, one has to dispense with a materialist worldview. Because of that fact, p-zombies can never have anything to say about materialism itself.
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If you assert that p-zombies and their "conceivability" somehow disprove materialism, then indeed the burden falls on your shoulders to demonstrate why. Of course, you have done that to your satisfaction many, many times. I believe each time has relied upon assuming a dualistic framework in advance, however.
I thought you might get a kick out of my reading Dennett. I truly am reading it.
And I retract any representations I may have made, other than that you have misrepresented Chalmers's position with regard to p-zombies.
Thanks.
Fair enough. By way of analogy, you don't understand The Great Gatsby.
Don't I?
AS