If we find ourselves with a problem then our previous learning has been insufficient. As to sado-masochism, there is no accounting for taste.
So, is it learning that has been insufficient, or is it teaching that has become insufficient? And has learning been insufficient by reason of insanity, or is there insanity by reason of insufficient learning? Also, I don't like the ease with which the term sado-masochism rolled off your tongue with such smoothness. It might just be me, but . . . I don't know. At any rate, I guess that's none of my business.