This is such bass-ackwards thinking.
Basically, true blue believers think this way- Jesus said that "this generation" will not pass away before [YADDA] and the Governing Body has never been wrong before, so their adjusted thinking on this must be correct.
The basic JW even feels like the GB are so much more wonderful than the churches because they are able to adjust when necessary instead of remaining rigid in their teachings.
WAKE UP JW's. Could they simply be wrong in the first step? How and when did 1914 come about? Maybe their error lies in the very premise that "the last days" must have started in 1914. Research C.T. Russell and the Great Disappointment and JW's teachings about 1975 and see what is really wrong.