Stopdog, in the immortal words of Oscar Hammerstein II, "How do you keep a wave upon the sand"? Or, how about, what does the color "red" look like? Why is it so hard to convey that? Therapists learn conveyance tactics, but (a) not all of them get A's in all courses, (b) not all clients are able to receive equally, and, (c) not all knowledge is conveyable but can only be experienced. You may say that how to have a baby can be taught to male obstetricians but, also, how to have a baby, cannot be taught to anyone who is/has not having/had a baby.