Many of you no doubt remember when the Society released the book Mankind's Search for God. I had always figured that, since there were questions printed at the bottom of each page, the book would be studied at the Congregation Book Study. Till this day, it has not been studied, and in fact, besides a couple of placement campaigns, not much was ever really done with that book.
My guess is that, besides the first few and last few chapters, the book was discussing other religions, and I had wondered if maybe the GB had changed its mind and decided that study of other beliefs might not be such a great idea.
Also, another thought I had was that the average jw would have thought the book to be very uninteresting, since jws generally don't feel a need to discuss other beliefs. The problem with that theory is that the GB is hardly ever in tune with the feelings of the average jw, so I doubt they'd let that sway their decision on any matter.
Why do you suppose that book was never studied?