There were many psychological experiments conducted which proved without a doubt that subconscious mind is actually a "master" of this part of the mind which we call the concious. It precedes and filters what in the end the conscious mind perceives.

How come that the subconscious decides about what we 'see' (both physically, mentally, and in any other sense)? Any ideas?

And how does programming mind work? Why there is any programming needed in the unconscious mind, like with nlp techniques for example?

The good idea to determine this could be a research made beyond the physical body and then checked what happens. I remember Robert Monroe stating about facing strong emotions which he couldn't handle at certain areas when out of the body - which he wasn't aware of when in a 'normal' state. What are these emotions actually about, then? Where are they stored?