The educating thing for me was to see people studying with a JW come to a book study and realizing that their one-on-one study was VERY different than this study.
They were used to be able to ask side questions and have them answered by the JW right then or at the least the next study (during the study time).
One woman raised her hand and asked a question not in the paragraph. The conductor just about choked on his gum. "We can answer that after the study." About 2 paragraphs later, she asked another question not in the paragraph. Same response. She leaned over to the sister and said, "I thought this was a discussion group; all I see is people reading paragraphs and repeating what is in the paragraph." This woman picked up her coat and purse, leaving behind the NWT and WT publication and left.
This woman validated what I already had observed myself. It took her only one visit to a book study to see it though. She left and I stayed for about 5 more years. Smart woman!