It took me four months to notice something interesting in a February 2018 Vanity Fair piece about 2001: A Space Odyssey. It’s an excerpt from a draft of Stanley Kubrick and Arthur C. Clarke‘s script, a scene that was never shot. A conversation between Dave Bowman (Keir Dullea) and that Mission Control guy (“Sorry about this little snag, fellas”) about what turned HAL into a killer.
MISSION CONTROL: “We believe his truth programming and the instructions to lie, gradually resulted in an incompatible conflict, and faced with this dilemma, he developed, for want of a better description, neurotic symptoms. It’s not difficult to suppose that these symptoms would center on the communication link with Earth, for he may have blamed us for his incompatible programming. Following this line of thought, we suspect that the last straw for him was the possibility of disconnection. Since he became operational, he had never known unconsciousness. It must have seemed the equivalent of death. At that point, he, presumably, took whatever actions he thought appropriate to protect himself from what must have seemed to him to be his human tormentors.”