User blog comment:SonofMeridia/What does Nico Know about the Prophecy of Seven?/@comment-4515675-20111122191050

Well we know for sure that Nico has access to information, probably from the dead. I think that while he was looking for Bianca he came across many spirits who might have let it slipped about the whole secrecy of Camp Jupiter and the Romans. How much he knows about the 7 demigods is still unknown. I think that the Fates are the ones who hold the whole information but they might not share everything with the gods. I think it's obvious that even they don't know everything at this point.

I think it's a bit too early for Bianca to be reborn, even if she does she'll be a baby so I don't think it's possible for her to help. She's not like Hazel, Nico can no longer reach her so he can't bring her back. I do agree with you that he's probably the most informed demigod at the moment and I also think that he's the one who can read the signs that will lead them to the DoD.