I have just finished reading a great book entitled "Believing Bullshit" by Stephen Law, published by Prometheus Books of N.Y
www.prometheusbooks.com
In it the author outlines how we come to believe total claptrap most often because of the dubious methods used by the promoters of these ideas.
He does not set out to debunk the ideas themselves as the main purpose of the book, though in passing he has to do so with some .like Alien abductions, Christian Science and Homeopathy etc. his main purpose is to expose the methods used to get people to believe,,and how even if the idea being put forward may be good, or a truth, to use such methods is not justified, and leads one open to being sucked in to an intellectual black hole if you are duped by them.
If this book is read by an active, believing JW they will not smell any rats, but by the end of it, if they are honest with themselves they will see the methods used by the WT as totally dishonest and reminiscent of snake-oil salesmen.
It may just free their minds enough.
I cannot praise it too highly, it is a valuable read for anybody, and shows why even college educated, intelligent people can be fooled by BS.