I was just thinking what it would be like for 20 or 30 xjws to attend a wt study and the havoc they would cause.
Here the senerio; They all attend where nobody knows them and do not say anything that would let the JWs know they are Xs, (of course the would catch on eventually). They would not all sit together but spread out. They would all study the wt with a view to making comments that would make the JW start to question.
The conductor would call on a few strangers in the begining but eventually would get wise to what was happening. When that happens and it is clear nobody except the known faithful would be called on, many could start speaking even if not called on (well thought out before hand). Now I'm not suggesting anybody do this, but can you imagine what type of measures the WT Society would take if this started happening in english speaking countries throughout the world. The meetings would get have more bouncers and all conductors would be warned not to call on anyone except the those know to be good jws etc..