Well, the WT study for tomorrow and next Sunday are excellent examples. If you have been a JW for 20+ years you may remember that the WT went into great detail on different illustrations that Jesus used.
In par 13 tomorrows lesson mentions the parables of "the leaven", "the mustard seed," and "the dragnet." In the past, all of these pictured bad things associated with Satan. Now they all picture good things in connection with God's kingdom. I conducted the WT back in those days and I had a lot of Cognitive dissonance, the explanations sounded crazy. But....that is what the FDS was directing, so Confirmation Bias sets in. I ignore all of the alarm bells and teach what is in the literature. Guess what? The alarm bells were right all along, none of the past explanations are right....according to the 7/15/08 WT adjustments!
Now, here is what is truly amazing. After showing how the interpretation was wrong, Paragraph 9 in tomorrow's lesson says: "For many years, God's people found this approach to Bible accounts faith strengthening." In other words, "We were wrong in our interpretations but these false understandings were still faith strengthening!
They cannot say: "We were wrong!" No, these false teachings were still faith strengthening! How messed up is that?