My comment said absolutely zero about the extent to which I think CEV is possible.

That's sort of like saying the internal combustion engine is an extremely crude attempt at a perpetual motion machine.

I don't think this analogy get's the levels of analysis of these two things right or accurately conveys my position on them. When I said normative theory was a extremely crude attempt at coherent extrapolated volition I was definitely not saying that all moral philosophy until now was a footnote to Eliezer Yudkowsky, or anything like that. I was not comparing normative theory with the theory of CEV. I was comparing moral theorizing to the actual act of determining the coherent extrapolated volition of a group of people. CEV isn't a normative theory, it's much more like a theory for how to find the correct normative theory (in the tradition of reflective equilibrium or, say, Habermasian discourse ethics). When people do normative theory on their own they are making extremely crude attempts at the ideals of the above.