At Jupiter, Bowman finds a third monolith. After he succeeds, Bowman discovers that the mission was to reach the target of the Monolith’s radio signal. Bowman manually re-enters and deactivates HAL.
When Bowman tries to get back inside, HAL refuses, telling Bowman that his presence jeopardizes the mission.
Bowman tries to rescue him, but while he’s outside, HAL kills the suspended scientists. When Poole is on a spacewalk, HAL sets him adrift in space, killing him. Why did you teach a computer to read lips?
