Though not explicitly responsible for Poole’s death, the circumstances surrounding it heavily implicate Hal, from his demands that Poole replace the AE-35 unit and his increasingly abnormal communication style to the fact that he controls “Betty,” the pod responsible for killing Poole. Such ominous signs are reflected in Bowman’s allusion to Captain Ahab’s gesture at the end of
Moby-Dick, beckoning the rest of the crew to their watery graves. Bowman, it would seem, fears that he too may soon be joining his crewmate in the grave.