>>283036954
>"things can't always be fixed"
I don't think that's the message at all. Shinsekai Yori is about the world being so bleak that the only way for the human race to survive with their insane, often accidentally homicidal inborn superpowers is to fuck with people's minds by splicing human DNA with bonobos and routinely brutally executing 1 in 2 children with cat demons.
If it has a message at all, then I would understand the message to be that if a society must do heinous things to perpetuate itself, then it is better off dead.