Very very predictable, including the post credit scene !!!

While it doesn't offer any answers, it both thrills and makes you think.

It is interesting even when nothing much happens, which is for most of its 3-hour running time. Read full review

If you're interested in the topic at hand, you should just watch it and judge yourself because the reviews have gone very biased by people that didn't even watch it and just hate (or love) the creator. I liked it, it was well written, narrated, and directed and it was about a topic that interests me.