My personal theory is that we have the structure of the mind wrong. Yes, there is the utterly useless conscious level, which no number of refrigerator-magnetized reminder notes can quite penetrate through to. Beneath that is the subconscious, which is mildly more suggestible than the conscious, but still no great shakes. Then there's a third level, a sub-subconscious that retains everything it has ever learned. Oh, the things you could indelibly inscribe on it, if you could only get at it.
Problem is, no one has ever figured out how to get through to it.
I call it bone. I enjoyed serving this essay up for you, and I did it for free. Think of it as a voluntary subscription.