For years, I've never understood why we read a paragraph, ask a question, and then recite what we just read in the paragraph, and at the WT Study, it's an hour long period of severe boredom because, well, how many times can we recite the same stuff over and over? Even new ones who come in have been baffled at this method of teaching. I have a theory, though.
However, I just read the "What Is Sacred Service?" post over on jwstruggle.com (http://www.jwstruggle.com/2012/03/what-is-sacred-service/), and I think I finally have a theory about the Q&A study method employed by the WT. If one were to read the WT article straight through without interruption, they might see the contraditions within articles, just as this posting mentioned (para 5 compared to para 2). It's the same as reading the Bible straight through instead of cherry-picking scriptures. Everything would be in context. However, by stopping at the end of a paragraph or two to ask a question, even when preparing for the study ahead of time, the average JW would not see the contradictions because the thought process is interrupted by those questions and the instilled need to highlight the answer.
There have been interesting studies about interruptions with relation to various types of work (e.g. writing, software development, etc.) It takes the brain quite some time to get back into "the groove", so to speak, when interrupted. The questions at the end of the paragraphs are just that: interruptions. The flow of an article is interrupted enough so that the mind has a difficult time connecting the dots between paragraphs, and thus, it's easy to overlook the many contradictions and odd statements that are made. My awareness has been heightened in recent months, but I find that I still miss a lot of the contradictions that so many of you easily pick up on.