I think there are substantial differences inherent in the procedures that cannot be reconciled. I'm sure you can reflect on them yourself easier than me explaining them.
I don't know that it's a matter of "easier" - I can reflect on my own thought but I can't come up with yours - I am interested in your thoughts and answers. I live with my own thoughts all the time! (and I get tired of them) - so a fresh perspective is valuable to me. I'm not going anywhere in particular with the questions - just seeing what comes from them, what holds up to them and I hope you would answer them differently than me. I suspect you would.
Under one perspective, there are no differences in the procedures, no reason to control the rate or order of neuron replacements (I do still want to hear your answer as to
how the engineers will make these decisions - it would mean knowing how to preserve consciousness as it's replaced? (not sure I'm coherent here):
We decided earlier it's possible to create a device with all of the requirements to be conscious but we can't prove that it is conscious. So that leaves open the possibility of a "zombie".
We may be using the term "epiphenomena" differently - my understanding is that, as you said, it is just what is as a result of a sufficient degree of complexity - the way Dennett and others use it - subjectivity (the "I") is just "along for the ride" so to speak and doesn't offer anything. Interestingly, the Buddhist doctrine of Dependent Origination (as I understand it) is similar . . .
Epiphenomenalism - Dennett claims experiments show that consciousness is constructed after the fact - that there are spikes in the brain before a decision is consciously made so that you can reliably say what the person is going to do before they can . . . others have disputed these experiments (of course!) . . . and my understanding of Dennett is that he doesn't allow for consciousness to "feed back into" behavior - so reflection and mulling things over, the very things we are doing now theoretically occur without subjective awareness - it is constructed afterward and indeed, if we acknowledge zombies, we have to at least admit that such things can exist and function with the same "intelligence" to all outward aspects. This gets into Free Will and Searle, I think it is - argues that free will is necessary for rationality and that has implications for the role of consciousness but that seems far afield to our discussion - Here is another problem which is if you are patient #2 then no matter what assurances from patient #1, he will no more be able to
prove to you that he is conscious than the device we constructed above - so it's getting at a way to test your
faith or
satisfaction that the process will indeed work and make the decision to submit to it. That's why I asked why you wanted to be awake for the process and control the rate and which neurons are replaced when? You go to sleep each night, the brain changes - someone else wakes up (under this theory) and really, in a way you are always undergoing the process you describe (neuronal replacement) all the time. (again, I
think) -
So is the Kuerzweil objection merely visceral or is there a difference in slicing away the brain and replacing it physically one at a time in the brain with neurons? Under this view there is no location of consciousness because it's not a thing that can be located - it's an epiphenomena that arises "here" in you before the operation and then arises, identically, "there" after the operation - with here and there only referring to the physical location of the neurons, whichever procedure. So it's really only if we can show that consciousness makes any difference at all that we can choose between them or choose not to engage in either operation (given, of course, sufficient incentive but not enough to encourage "sacrifice" i.e. I can't offer you a body of steel to better care for your loved ones, for example) - I'm not quite sure what to do with the desire for pleasure experienced in your own subjective awareness, under this view, this is all also constructed after the fact - after the release of dopamine or whatever, but is essentially (I'm hesitant to use the word "illusory" but it seems to apply) - back to the Doctrine of Dependent Origination and the Tibetan diamond drill - under this meditative scrutiny, the "I" and everything associated with it, does indeed slice away (or is drilled to dust in the traditional metaphor) just like in the first part of the Kurzweilian procedure and I find that fascinating . . .
I think