LONG POST WARNING!!
(1) OK, this is a very imperfect analogy, but I hope you catch my drift . . . Vatsyayana, in the Kama Sutra, after detailing a number of techniques for endearing oneself to the beloved, and for beginning lovemaking, warns: when the natural drives take over, forget these rules and follow them.
(2) I have no calibrations on my voice box for reaching notes, but I can navigate any melody pretty well the first time hearing it.
(3)You can get a piece of fruit down off a tree in any number of ways: climbing and picking, chopping down the tree, using a stick, using a ladder, etc. The human brain and nervous system are not so limited and mechanical, I believe, as some of us are making out.
(3) I've been working an hour or two daily on theremin for about three years now, and I notice that the connection between my intention and my hand is getting more and more like the connection between my intention and my voice box. My take on it is that the fingerings are a great learning tool, but that they can be jettisoned like Vatsyayana's rules for romance--or rolled up like a rope ladder once you're up in the top bunk--as you learn to reach the pitches naturally. And then, as with the fruit in the tree, you can hit a note in innumerable ways. (Think of Ms. Rockmore's comments on the joys of the terpistone--that she could strike an interval with a movement of the head or shoulder or . . . ).
(4) I certainly use "aerial fingering" in the sense that I flex my hand as much as possible before moving my elbow--I can get about an octave that way. It just makes ergonomic sense.
(6) Consider the process of (quietly) hunting for pitches (something EVERYBODY does). You don't really have to locate the exact pitch: you just find something close--and then your fingers "know" just what to do in order to trim to the exact note. This "knowing" is the whole point, and this "knowing" is what needs to be cultivated. What's required is constant careful attention to the sensations in the arm and fingers, so that the mind can form the proper associations.
(7) Deaf people have a hard time learning to speak "properly." The better you hear, the better you can learn to speak. Same with sensation and movement: the more precisely you feel, the more precisely you can move. One needs, first and foremost, to make oneself very aware of the subtleties of nervous and muscular activities in the trains of muscles along the arm and hand and fingers (and the whole body, really . . . )and then, with the desire to learn how to hit pitches precisely, learning naturally takes place. By making lots of mistakes and by being thrown into lots of different situations, you learn how to get from here to there--not with a car or a bus or by walking or by running, but JUST HOW TO DO IT, IN ANY CIRCUMSTANCES. That's what our brain is good at!
(8)I think that all the metric 4- or 5- or whatever number- position systems, if they are not pedagogical devices or psychological props, are the result of a wrong idea of how our mind and body actually work. We're really much more organically, dynamically intelligent than that.