Even the greatest teacher would not possess the ability to explain that which he understands not. He would then not be in full possession of the faculty of reason required to perceive, interpret and explain that which he does not find understandable.
Perceive, interpret, explain. These are the primary tools of my analytical mind. It is these three tools that enable me all my other abilities.
The brain possesses the primary ability of perception and reason–that of interpretation. It is the conscious, and to a lesser extent, the unconscious, that allows that stimuli an explanation, a comparison. Is there divinity with consciousness? Perhaps it is that raw, unprepared, unconscious part of the mind that really drives us, permits us an existence. Not all men are reasonable and wise; practiced in the art of judgement.