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After Bowman re-enters the ship after HAL refuses to open the pod doors, HAL realizes that Dave is going to disconnect him.

HAL keeps saying something to the effect of, "I'm quite certain that I'll be okay now."

Was this a lie intended to stop Dave from disconnecting him or did HAL actually fix his logic errors and WOULD have been okay?

  • This is you... – Valorum Feb 19 '16 at 20:17
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    If HAL had actually reprogrammed himself to remove logic errors, wouldn't he have mentioned this to Dave when making the case that Dave shouldn't shut him down? Instead he just gave vague reassurances like "I feel much better now" and "l know everything hasn't been quite right with me, but l can assure you now, very confidently, that it's going to be all right again", suggesting he didn't have a more concrete reason to be spared. Also, do you want people to rely only on the movie itself when answering this question, or can they also make reference to the sequel movie 2010, or to the books? – Hypnosifl Feb 19 '16 at 20:17
  • From what I recall from the book, it seems unlikely. I think I recall there being a hardware flaw coupled by some programming problems. But I don't have the book handle to confirm with refs. – Zoredache Feb 19 '16 at 20:18
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    @Zoredache More precisely, HAL was given conflicting orders, as well as the directive to hide vital information from the human crew, and to consider itself and the mission more important than the humans. – Andres F. Feb 19 '16 at 20:48
  • @Hypnosifl: Any answer will do. – Scottie Feb 19 '16 at 22:21
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The reason that HAL tries to everyone in the first place is that he has been given conflicting programming. As we see at the start of the film, evidence of intelligent life has been discovered in the form of a monolith buried on the Moon. The mission to Jupiter has a secret purpose of investigating this further. The secrecy is so great that only HAL knows about it, and he's been ordered to maintain this secrecy at all costs. This is revealed in a recorded message just after Dave completes the procedure of deactivating HAL.

In the book it is revealed that HAL's behaviour is ultimately the result of this order. Killing them is simply a logical way to avoid having to tell them the true purpose of the mission. At first he merely fabricates a fault in the communication system in order to keep his options open, but then the astronauts start to discuss deactivating him. Since this would would jeopardise the secret mission he has no logical choice but to eliminate them. Although the book and the film differ in many details and can't really be considered part of the same canon, I think something of this does come across in the film, at least if you know it's there and go looking for it.

So in this interpretation HAL did not have any logic errors, but rather the problem was human error in giving him a secrecy order that outweighed the importance of the human lives on the ship. There is nothing that HAL could have fixed after Bowman re-entered the ship; he would have continued correctly implementing the orders he was given, which at that point would have meant killing Dave Bowman some other way, after which he would have carried out the scientific part of the mission on his own.

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In the novel, HAL's attempts to manipulate Bowman are insultingly transparent. He is quite literally the worst liar in the history of lying.

He knew instantly that the eye had reacted to his presence. There was the hiss of a carrier wave as the ship's local transmitter was switched on; then a familiar voice came over the suit speaker.
 
Something seems to have happened to the life-support system, Dave.
 
Bowman took no notice. He was carefully studying the little labels on the logic units, checking his plan of action.
 
Hello, Dave,” said Hal presently. “Have you found the trouble?

and

I think there's been a failure in the pod-bay doors,” Hal remarked conversationally. “Lucky you weren't killed.

It's pretty reasonable to assume that if Dave hadn't lobotomised HAL, then HAL would have tried to kill him at the next available opportunity.

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