Arguing with the less sophisticated

I always find it difficult to argue with the less sophisticated. Since I see things in a more complex way than they do and my understanding may be beyond their comprehension, they rarely argue in my terms for the simple reason that they are not capable of doing so. In order to go on with the argument, I have to argue in their terms. However, expressing my points in their terms is not easy, if possible at all. And on top of this disadvantage, I may have to, when the less sophisticated have lost the debate, show them how they have lost it.