I feel that this chapter hints so much at what's really going on, if only we knew more!
What is the "Golden Key" exactly? In Joah's memo, he mentions that humanity threw away the one Golden Key, and Lien says that Sigma entrusted him with the Golden Key... so does it have something to do with being a transcendental being? And how/why would humanity loose it...
Also, why is Boltzmann mentioned on that slab? I guess it pretty much implies that the ruins did indeed come from Earth, but what is his significance to the ruins? Why in the creation of the ship would something about him be placed there...
And in Joah's memo #4, what exactly is the "Great Maze"? Does it have something to do with Zeta maybe? Also, I was thinking that Zeta could perhaps be used to travel through space. In the beginning of Ristaccia's pv, it almost looks like the ship came through it to Earth...
I also find it interesting that Shamshir thinks that Transcendental beings will bring disaster, and thus kills Lien, because the A.D. memo for her chapter is Augustine's that says that transcendental being is not necessary and that the elite genes must be sealed off, which is exactly what she is doing...
And finally, Joah's consciousness appearing as Lien is dying... is it because of Shamshir's ristaccia piece, or Lien himself? Or something else.... the chapter says it's in the vortex of sequences, I'm not sure if that's significant or not... so much to think about!
Wow, so many questions and rambling!