@OP
This is the great logic, but from my experience the ability to appreciate this logic is directly connected to the ability to process cold hard facts, and to look at things from an analytical standpoint.
You mentioned that for you things are simple 1 +1 = 2. I'm like that as well, but there is an enourmous amount of people in the world and in the organization, who simply are not able to take on that perspective.
I've been in a situation where as i'm making these points to an active JW, step by step, just as you did in your post, their brains come to a stand still and they stop following the train of thought. They look at you with a glaze in their eyes as if you just explained atomic fusion to them. Maybe i'm about to say something harsh, but i truly think many JWs are too dumb to recognize simple logic, and so they will never leave.