Is "duty" Floyd's real reason for going on Leonov's mission to Jupiter? How useful was he onboard the ship?

What about Walter Curnow causes Floyd to dislike the engineer? What eventually causes them to become friends?

Why does the crew of the Leonov seem to distrust Chandra? Do certain crew members trust him more or less than others? Why or why not?

Is Hal really conscious? Explain your reason for why this is or isn't the case, keeping in mind arguments from characters in the novel.

Why does Dave return to Earth and visit Crystal Spring? Is this a place of his choosing or the forces that control him? What about the Spring is so significant to Dave, and how might that relate to his mission on Discovery?

Who onboard Leonov get married by the end of the novel? What is significant about these...