Why does Aster leave Flick’s foot for Lieutenant to find? In what way is her sense of risk different from Giselle’s?

Space is an objectively hostile place, naturally unsuitable to sustain life. How does Solomon use space as a metaphor for the conditions of people who have been uprooted from their homes?

In what ways do women serve as bonding elements for the people in the lower decks? How is their power disrupted by the forces of the upper-deckers?