Turil,
It is an interesting, well rounded and thought out entry. I use a similar dichotomy in my entry, of the central nervous system and circulatory(and respiratory, digestive) systems as reflective of our cultural needs and how they might inform us of what the problems are.
While you use the term autopilot to describe the executive function of consciousness, I won't exactly disagree, but think it is more nuanced. What I sense is that biology is inherently conscious, but knowledge is a function of discreteness and static order, so the sense of self, or I, that we all possess, is an isolated focusing of the mind's and the body's general awareness. Consider how thoughts can be 'on the tip of the tongue.' Compare that to someone else trying to get your attention. Just as that other person is obviously conscious, so necessarily is the part of the brain holding the piece of information that doesn't quite rise to the surface. This then goes to the question of why should our sense of awareness not be more general and system wide?
As I see it, definition is limitation and limitation is definition. Perception is a function of lots of limiting factors. Much like taking a picture requires focus, speed, direction, lighting and numerous other contextual factors, otherwise too much, or too little light and thus information will get in. Now consider what happens with too much light; The result is whiteout. Effectively all the extra information cancels out. The signal is lost in the noise. Now consider how much knowledge is just such a process of distilling signal from the noise. What might be signal from one perspective, is noise to another. Logically then, universal knowledge is an oxymoron. If we were consciously aware of all that was going on around us and in our bodies, the effect would overwhelm our senses, or require far more processing power than could be easily sustained by a biological organism. Thus we are a form of swarm intelligence, both in our bodies and as a group.
Now the nature of knowledge being inherently discrete has a lot of other ramifications. Some of which explain political conflict and how groups, and ideas like to dominate each other and otherwise take over the space, which might make us somewhat cautious about entertaining beings from other planets...
Regards,
John M