I have been trying to discuss and reason with JWs about their beliefs for some time now and it usually ends in "agree to disagree". I just don't feel like I am getting anywhere, they get their guard up super easy and will dismiss anything no matter how logical or factual.
So the other day I tried another tactic, instead of arguing for another point of view I started to agree with them. This made them much more talkative and open, their guard went away somewhat. I let them control the conversation which went from one topic to the next whenever it became unconformable. (my goal was not to win a debate or have them agree with me)
The trick I came up with was to expose their fallacies but then agree with the conclusion. It is like a respectful and serious mocking.
Example:
Me: "So the food from the governing body is only from God if it is true? And Jehovah let them make the mistake if it is not true? That makes sense, Jehovah himself would not make a mistake. That is a good way to know if it is actually from God :)
*JW staring into noting for a little while*
JW: "Yes... Well, maybe Jehovah want to trick the demons by letting the governing body make mistakes?
Me: "Yeah, that makes sense. That way Jehovah can outsmart them and win! :)
*more silence*
JW: "Well, the demons probably think they can win but they really can't"
Me: "Oh yeah, you are right. I did not think of that"
JW: "Yeah..."
*JW changing the subject*
This method was used whenever I could think of a good way to expose their flawed thinking through the entire conversation.
I felt the conversation was very fruitful and pleasant. Instead of me asking the difficult questions and arguing for them the JW asked them of himself. I just kept on pointing out how ridiculous his view was by agreeing with him. It was hard to do but I agreed with pretty much everything he said, I am not so sure he did the same :P
I do believe that the person has to be somewhat intelligent to see the problems for themselves and you most not let them know that you are "mocking" them.
I have not tried this extensively so I don't know what kind of results it will yield but my first experience was positive so I felt like sharing it with you guys, maybe some of you will have some use for this "method" ;)