The historical changes of Watchtower doctrine and its current inadequacies are an excellent indication that the Governing Body are not directed by Holy Spirit. However, many followers do not manifest a scholarly nature and are ambivilous to the issues of doctrine, or simply dismiss it as foretold by "brighter light".
In such cases, Doctrine is not the way to open the Witness mind's eye. Particularly where the follower holds the Governing Body in high esteem, to learn of indiscretion can be a shocking awakening. This is especially so when it is in areas where the Watchtower is outspokenly critical of other religious organizations. The areas listed here are considered particularly important by active Jehovah's Witnesses and becoming aware of the duplicity shown by the leadership has been instrumental in many followers leaving since the late 1990's.