Some concepts are just too difficult to be fully understood. Take for example the multivariate causes of the recent recession: who among us can honestly say that he or she grasps the situation completely? With respect to topics like this, although it is not possible to thoroughly grasp the concept, attempts can be made to elucidate--at least partially--the more mysterious parts.
Accordingly, is there a phrase that means, "To make less mysterious, but not explain completely because the concept is too difficult"?