The one thing about Shinsekai Yori that had a negative effect on my viewing experience was that it was horribly, terribly, and downright criminally, underappreciated.
I knew this was tanking, but for it to lose so badly on a poll that it was beaten out by the likes of Amnesia... There goes my already shaky faith in humanity.
You know, it took me 21 episodes to realize I'm probably the only person who spells the title of this series with Shin and Sekai together; I think it's a hold-over from the lack of spaces when writing in kana.
Have you ever heard of the term "death flags"? That's essentially what this episode of Shinsekai Yori has painstakingly set up in both subtle and obvious forms.