I find that a rather strange question !! I think the problem stems more down to insinuation , far more than actual - ' You must not ' or similar lines , although the Watchtower has frequently stated Jesus words ' My followers are no part of this world' and stretched it with comments such as ' Christians cannot move to the moon' cleverly insinuating that there is great peril outside the Org, and without actually realising it, you grow a subconscious fear of all things outside, especially mixing with outsiders for fear that you may be misled ( Kind of like a group of lions isolating its prey - trapped from out side help) Their pictures are also highly suggestive, I remember well over a decade ago reading an Awake article which showed a Christian (Witness) being invited into a pub - which he refused. This cutting off from Society surely does not give a very good Witness !
The scriptures are a gold mine for gaining control - a relative of mine who has recently become a Witness, one of the first scriptures they knew of by heart, down to page and verse was ' Beware of Bad associations.' You can see from that fact, the power of the Org beginning to gain control. Once in there's little coming out the scriptures say ' make sure of all things' yet a witness is not allowed to read anything contrary, "apostate" and is greatly discouraged from reading bible literature produced elsewhere - despite the huge quality of work produced by eminent biblical scolars. I can agree with avoiding the work of the likes of the Archbishop of Canterbury who reportedly does not even believe in God but this is bordering on ridiculous.
The society controls almost all aspects of your life through its articles, even down to releasing articles on what is acceptable communication (in Gods sight) in the Bedroom with your wife ( Who is the third person in the marriage - God - there is no biblical mention of a fourth - the WTS) Who assigned these clowns authority to control our lives to such a degree?
Oh wait, " the faithful and discreet slave." - appointed by his master over all his belongings, and the marvelous truths that have been uncovered ( such as 1975,1925, 1874, 2000(!) the generation of 1914 , the date 1914, ) Only enthusiasm to see the end of this wicked system , just like Jesus apostles. Yet they conceal the greatest wickedness of all.........................