I agree with this: "trying to get rocks to think"
but if I talked to someone and really wanted to try to get them to think, I would ask them if they love their children, even the problem children. Why would a "loving" god be willing to kill off 99.95 of his children, even if they are rebellious. To me that is one of the most serious problems with this cult - but of course the zombies would have some glib answer. My favorite is that rattlesnake babies are as dangerous as adult rattlesnakes. I heard that at the KH once and I've never forgotten it - what supreme contempt they have for most of the world.