There are maybe three things going on here. In the original discussions surrounding the Sorites paradox (and Robin Hanson's mangled worlds), it was proposed that there is no need to have a fully objective and non-arbitrary concept of self (or of world). This makes vagueness into a principle: it's not just that the concept is underdetermined, it's asserted that there is no need to make it fully exact.
The discussion with Psychohistorian proceeds in a different direction. Psychohistorian hasn't taken a stand in favor of vagueness. I was able to ask my question because no-one has an exact answer, Psychohistorian included, but Psychohistorian at least didn't say "we don't need an exact answer" - and so didn't "vague out".
Fair point about missing the context on my part, and I should have done better, since I rip on others when they do the same -- just ask Z M Davis!
Still, if this is what's going on here -- if you think rejection of your ontology forces you into one of two unpalatable positions, one represented by Robin_Hanson, and the other by Psychohistorian -- then this rock-and-a-hard-place problem of identity should have been in your main post to show what the problem is, and I can't infer that issue from reading it.
The ontological assumptions are made primarily so I don't have to disbelieve in the existence of time, color, or myself.
Again, nothing in the standard LW handling requires you to disbelieve in any of those things, at the subjective level; it's just that they are claimed to arise from more fundamental phenomena.
They're not made so as to expedite biophysical progress, though they might do so if they're on the right track.
Then I'm lost: normally, the reason to propose e.g. a completely new ontology is to eliminate a confusion from the beginning, thereby enhancing your ability to achieve useful insights. But you're position is: buy into my ontology, even though it's completely independent of your ability to find out how consciousness works. That's even worse than a fake explanation!
Just like an information theoretic analysis of a program brings us no closer to getting actual labels for the program's referents.
Colors are phenomena, not labels. It's the names of colors which are labels, for contingent collections of individual shades of color. There is no such thing as objective "redness" per se, but there are individual shades of color which may or may not classify as red. It's all the instances of color which are the ontological problem; the way we group them is not the problem.
I think you're misunderstanding the Drescher analogy I described. The gensyms don't map to our terms for color, or classifications for color; they map to our phenomenal experience of color. That is, the distinctiveness of experiencing red, as differentiated from other aspects of your consciousness, is like the distinctiveness of several generated symbols within a program.
The program is able to distinguish between gensyms, but the comparison of their labels across different program instances is not meaningful. If that's not a problem in need of a solution, neither should qualia be, since qualia can be viewed as the phenomenon of being able to distinguish between different data structures, as seen from the inside.
(To put it another way, your experience of color has be different enough so that you don't treat color data as sound data.)
I emphasize that Drescher has not "closed the book" on the issue; there's still work to be done. But you can see how qualia can be approached within the reductionist ontology espoused here.
Note: I know this is a rationality site, not a Singularity Studies site. But the Singularity issue is ever in the background here, and the local focus on decision theory fits right into the larger scheme - see below.
There is a worldview which I have put together over the years, which is basically my approximation to Eliezer's master plan. It's not an attempt to reconstruct every last detail of Eliezer's actual strategy for achieving a Friendly Singularity, though I think it must have considerable resemblance to the real thing. It might be best regarded as Eliezer-inspired, or as "what my Inner Eliezer thinks". What I propose to do is to outline this quasi-mythical orthodoxy, this tenuous implicit consensus (tenuous consensus because there is in fact a great diversity of views in the world of thought about the Singularity, but implicit consensus because no-one else has a plan), and then state how I think it should be amended. The amended plan is the "minority view" promised in my title.
Elements Of The Worldview
There will be strongly superhuman intelligence in the historically immediate future, unless a civilization-ending technological disaster occurs first.
In a conflict of values among intelligences, the higher intelligence will win, so for human values / your values to survive after superintelligence, the best chance is for the seed from which the superintelligence grew to have already been "human-friendly".
The way to produce a human-friendly seed intelligence is to identify the analogue, in the cognitive architecture behind human decision-making, of the utility function of an EUM, and then to "renormalize" or "reflectively idealize" this, i.e. to produce an ideal moral agent as defined with respect to our species' particular "utility function".
The truly fast way to produce a human-relative ideal moral agent is to create an AI with the interim goal of inferring the "human utility function" (but with a few safeguards built in, so it doesn't, e.g., kill off humanity while it solves that sub-problem), and which is programmed to then transform itself into the desired ideal moral agent once the exact human utility function has been identified.
Commentary
This is, somewhat remarkably, a well-defined research program for the creation of a Friendly Singularity. You could print it out right now and use it as the mission statement of your personal institute for benevolent superintelligence. There are very hard theoretical and empirical problems in there, but I do not see anything that is clearly nonsensical or impossible.
So what's my problem? Why don't I just devote the rest of my life to the achievement of this vision? There are two, maybe three amendments I would wish to make. What I call the ontological problem has not been addressed; the problem of consciousness, which is the main subproblem of the ontological problem, is also passed over; and finally, it makes sense to advocate that human neuroscientists should be trying to identify the human utility function, rather than simply planning to delegate that task to an AI scientist.
The problem of ontology and the problem of consciousness can be stated briefly enough: our physics is incomplete, and even worse, our general scientific ontology is incomplete, because inherently and by construction it excludes the reality of consciousness.
The observation that quantum mechanics, when expressed in a form which makes "measurement" an undefined basic concept, does not provide an objective and self-sufficient account of reality, has led on this site to the advocacy of the many-worlds interpretation as the answer. I recently argued that many worlds is not the clear favorite, to a somewhat mixed response, and I imagine that I will be greeted with almost immovable skepticism if I also assert that the very template of natural-scientific reduction - mathematical physics in all its forms - is inherently inadequate for the description of consciousness. Nonetheless, I do so assert. Maybe I will make the case at greater length in a future article. But the situation is more or less as follows. We have invented a number of abstract disciplines, such as logic, mathematics, and computer science, by means of which we find ourselves able to think in a rigorously exact fashion about a variety of abstract possible objects. These objects constitute the theoretical ontology in terms of which we seek to understand and identify the nature of the actual world. I suppose there is also a minimal "worldly" ontology still present in all our understandings of the actual world, whereby concepts such as "thing" and "cause" still play a role, in conjunction with the truly abstract ideas. But this is how it is if you attempt to literally identify the world with any form of physics that we have, whether it's classical atoms in a void, complex amplitudes stretching across a multiverse configuration space, or even a speculative computational physics, based perhaps on cellular automata or equivalence classes of Turing machines.
Having adopted such a framework, how does one then understand one's own conscious experience? Basically, through a combination of outright denial with a stealth dualism that masquerades as identity. Thus a person could say, for example, that the passage of time is an illusion (that's denial) and that perceived qualities are just neuronal categorizations (stealth dualism). I call the latter identification a stealth dualism because it blithely asserts that one thing is another thing when in fact they are nothing like each other. Stealth dualisms are unexamined habitual associations of a bit of physico-computational ontology with a bit of subjective phenomenology which allow materialists to feel that the mind does not pose a philosophical problem for them.
My stance, therefore, is that intellectually we are in a much much worse position, when it comes to understanding consciousness, than most scientists, and especially most computer scientists, think. Not only is it an unsolved problem, but we are trying to solve it in the wrong way: presupposing the desiccated ontology of our mathematical physics, and trying to fit the diversities of phenomenological ontology into that framework. This is, I submit, entirely the wrong way round. One should instead proceed as follows: I exist, and among my properties are that I experience what I am experiencing, and that there is a sequence of such experiences. If I can free my mind from the assumption that the known classes of abstract object are all that can possibly exist, what sort of entity do I appear to be? Phenomenology - self-observation - thereby turns into an ontology of the self, and if you've done it correctly (I'm not saying this is easy), you have the beginning of a new ontology which by design accommodates the manifest realities of consciousness. The task then becomes to reconstitute or reinterpret the world according to mathematical physics in a way which does not erase anything you think you established in the phenomenological phase of your theory-building.
I'm sure this program can be pursued in a variety of ways. My way is to emphasize the phenomenological unity of consciousness as indicating the ontological unity of the self, and to identify the self with what, in current physical language, we would call a large irreducible tensor factor in the quantum state of the brain. Again, the objective is not to reduce consciousness to quantum mechanics, but rather to reinterpret the formal ontology of quantum mechanics in a way which is not outright inconsistent with the bare appearances of experience. However, I'm not today insisting upon the correctness of my particular approach (or even trying very hard to explain it); only emphasizing my conviction that there remains an incredibly profound gap in our understanding of the world, and it has radical implications for any technically detailed attempt to bring about a human-friendly outcome to the race towards superintelligence. In particular, all the disciplines (e.g. theoretical computer science, empirical cognitive neuroscience) which play a part in cashing out the principles of a Friendliness strategy would need to be conceptually reconstructed in a way founded upon the true ontology.
Having said all that, it's a lot simpler to spell out the meaning of my other amendment to the "orthodox" blueprint for a Friendly Singularity. It is advisable to not just think about how to delegate the empirical task of determining the human utility function to an AI scientist, but also to encourage existing human scientists to tackle this problem. The basic objective is to understand what sort of decision-making system we are. We're not expected utility maximizers; well, what are we then? This is a conceptual problem, though it requires empirical input, and research by merely human cognitive neuroscientists and decision theorists should be capable of producing conceptual progress, which will in turn help us to find the correct concepts which I have merely approximated here in talking about "utility functions" and "ideal moral agents".
Thanks to anyone who read this far. :-)