I have to scratch my head and figure out why you want me to write a paragraph!? Of course you don't really mean it, do ya?
RunSun has got his point. Seniors who don't even know alphabet will shout "hurrah" if they have a chance to speak English, simple or complex, in front of an English spoken people. So you expect grandpa/grandma to go through a rigorous way to learn ABC? Please! No way and that’s how I see RunSun’s approach kick in.
Did RunSun ask us to take his approach as a Hallelujah way? I seriously doubt that you have browed through everything he’s said. Anyway, I vote it timber-down on people who over look patency. There are others, more efficient, less complicated ways available. RunSun can be the one.