What makes this so bad, is that it is the primary doctrine of Jehovah's Witnesses. Without the belief in "The Faithful & Discreet Slave", The Watchtower Bible & Tract Society would cease to exist.
This doctrine is only taught to someone who has become at least a regular attender at the meetings, or has progressed through The Bible Teach book and moved into the second study publication, Keep Yourselves In God's Love.
This is absolutely true. My study conductor never once mentioned the FDS. However, it was mentioned to me at a meeting, quite early on, by a stand-in study conductor with whom I was sitting. My actualy study conductor was frequently away. Anyway, when I first heard about the FDS I responded incredulously, "but that's a parable". I knew the Bible; I'd known it all my life. I couldn't believe that anyone could possibly think the FDS was real!
However, gradually over the months I got brainwashed, and by the time a year was up I was meekly trooping along with everyone else.
After I finished the Bible Teach book I was approved as an unbaptised publisher and we started on Keep Yourselves in God's Love. That's when I realised that it was not all the bed of roses it had seemed, because that book, so simple and kind at first glance, turned out to be full of stuff that I've found totally unacceptable. It is a complete turn-off.
I'm very interested in what you say about Hassan's book. I haven't read it yet. Another thing that no-one has yet mentioned is marrying within the faith. Also, I don't think disfellowshipping is mentioned in the Bible Teach book.
Though all these things do come up in meetings and I was verydiligent about going to them. Good grief, I even looked forward to them!