Eliezer,

While I am unable to comment on the quantum physics, you have raised a valid point (albeit too briefly?) by noting that a very similar problem applies to the very young and the dieing. When does a human child become conscious? Dennett would indeed argue that there is no such single moment. It appears to me that until this question is solved (and it can be without recourse to QM), a similar scenario in QM isn't going to salvage it. In other words, going from 0 to 1 seems like an easier but just as fundamental question than going from 1 to N.