I was thinking about the JW Blood Doctrine earlier this morning, and how pervasive the indoctrination is, how people who have long been out of the Org will still refuse a Transfusion for example.
I thought of how to deal with it if a JW would discuss it. I decided that the first thing to do was peel away the layers of their belief. "Why do you believe this idea is truth, is right ?" would be my first question. Their reply would probably be "Well I believe the Bible plainly says to "abstain from blood".
Instead of immediately attacking this false premise I think we should ask, " If I can show you that the Bible is not saying that at all, would you change your view ?"
They may then say "Yes", and you can proceed, with caution. You will have to remind them throughout that they agreed to your showing them their view of Scripture was wrong. Really, underneath the JW will probably not accept your explanation, because it hasn't come from the men in N.York.
You have to get them to acknowledge that their belief is shaped by other men's interpretation of Scripture, not by their own study of it. Then you have to get them to see that the same group used to accept Blood Transfusions, but not Organ Transplants, and that therefore if that same group The FDS, could be persuaded that blood was the same as an organ in what it did, they could accept transfusions.
And so on. What I am trying to say is that a JW will not simply accept the evidence for anything, you have to undermine the hold that the idea of an FDS that is to be trusted has on them, as well as present an argument.