Russel, the founder of the bible students wrote about this subject in Studies in the Scriptures: he was against the idea, of being an organisation, with a central college, like the papacy (vatican), like he called it.. Why? Because his experience was, that in those denominal churches, questioning a doctrine, was not practised, and punished, if someone did it....
he spoke in volume 3, Of studies in the scriptures, about the danger the slavery of the conscience, when being member of an organisation..
he was against the idea promoted in human religious organisations, that being a member, is essential for personal salvation, but that our names are recorded in heaven, that the most important, rather then keeping records by human organisations..
Ask a JW, next time you meet him, if he knows that russel wasn't in favor of an human organisation, and mention that he can read it in the Studies in the Scriptures..by himself..
if he will object, about they not use the STISm anymore, then tell them that all the missionaries who where graduated until 1989, know this fact, also the GB, because study in the scriptures where used by teachers in the Gilead missionary school until 1989, then, the use of it was being removed.. if you see the developments in JW Organisation, I can understand that according the definition russel gave about an human organisation, is classyfying them as part of Babylon the Great..
according to the standards of their founder, they are far from being directed by God's Spirit..