Ossorio: I’ve looked at the first two, and since I think they’re reasonably easy to answer, I’ll answer them before I go on to looking at the rest. The first one says "You said that ‘the infant lives in the darkness of inexperience’. At what point does the infant move out of that darkness, and how do you as an Observer recognize when it occurs?"
Probably the best answer is that there is no point at which the infant moves out. If you think of simply a gradual improvement over time, starting from near zero up through as high a level of competence as the infant is ever going to achieve, there are no discontinuities you might say that you can point to and say "At that point things changed". All you can say is he gets better and better.
Or you can say if you reach that endpoint of the ideal or normative level of competence, reaching that point is potentially that breakpoint. And you can say, when he reaches that point, that’s when he’s moved out of the darkness of inexperience. Up to that point there is still some of that darkness; there is still some of that lack.
Now the question of how you recognize it, the answer is you may not. Particularly if you haven’t reached that point, you probably won’t.
The other answer to that, by the way, is the old clinical answer, "It all depends." [laughter]