Continuing a thought from the other post, but putting it here to hide a spoiler... Number 5's aunt also "veils" her identity, by writing under a different name rather than her own. And why does she act as if she doesn't believe in Veil's hypothesis when she speaks with #5? Does she actually not believe it, only using this as a pose for writing an academic fancy? Or is she pretending with #5 for some reason — like, perhaps, Mr. Million, who remember is himself also the aunt, asking the boys to argue both sides of various quetions: is she doing that herself in arguing against her own theory (playing #5's role), or is she getting #5 to do it (playing Mr Million's), or, since she is both, doing both at once? Does Aunt Jeannine invent Veil's Hypothesis as part of a memory, or rather say a tradition, that remembers the purge, being descended (or rather cloned) from the one human being to survive the murder of the humans? Or just one of the humans to do so?