Deckard is a replicator who didn't run, which is the director's own admission.
But is that all there is to it? As a science fiction movie with excellent reputation, the director has created a new world, which must strictly follow some self-consistent rules, otherwise it will not be an excellent work, because too many logical loopholes will make the film difficult Justify yourself.
So we can further reason based on the logic of the movie.
The four Nexus6-type replicants in the film all know themselves to be replicants, not human. But Rachael is distinctly different from them, as a new type of replicant, non-Nexus6, has implanted memories as a foreshadowing of emotions/empathy, so a At first she didn't know she was a clone.
Deckard is also a replica. He also doesn't know his true identity, so it can be considered that he and Rachael are the same model. They also have transplanted memories, which makes him never doubted his identity before and is easier to control. Explains why Deckard's combat power is weaker than Nexus 6. So the question is, Rachael's memory comes from Tyrell's niece, so whose memory is Deckard's?
Deckard clearly identified himself as being a blade runner, and the best one - his memory comes from another blade runner, but certainly not the one who was shot into the hospital by Leon at the beginning, because not the strongest (as can be seen from Sheriff Bryant's words are deduced)
Well, as far as people appear in the film, I think Deckard's memory is probably Gaff!
This bold assumption can explain the doubts of many viewers in the plot - Gaff was the best Blade Runner, and he was seriously injured in an operation to kill a Nexus6 clone that caused him to crippled a leg, explains his The lame walk requires crutches.
The relationship between Gaff and Deckard is bizarre throughout the movie, and they rarely communicate, but Gaff seems to always know what Deckard is thinking - the three-fold origami imagery is well explained by this hypothesis - because of how they feel Based on the same memory and awareness.
The first time, when Deckard was vaguely threatened by Bryant, Gaff broke a chicken, which means Deckard was chickened. Gaff knew that Deckard was scared because he had done it himself (chasing down replicants) and knew that there were How terrifying and wounded by it.
The second time, between the two encounters with Rachael, while investigating Leon's residence, Gaff folded a paper figure, but apparently had a third leg that was propped up. Some people said that the tail was really funny, who's tail Long in the front? Clearly an erect JB, he knew what Deckard was thinking because it was the Tyrell company he took Deckard to, he knew that Deckard would meet Rachael and be fascinated by her, as he had visited Tyrell before (probably to the Tyrell company) Take the feeling when Deckard met Rachael.
The unicorn that was folded for the last time is far-fetched to explain in other ways. In the film, it can be seen that when the unicorn appeared in Deckard's mind, his eyes were open, not sleeping. This shows that Gaff knew Deckard's hallucination, so They have the same subconscious mind. The unicorn, which corresponds to the biblical Old Testament Flood mythology, is generally believed to refer to Rachael (the incarnation of the noble and pure who vanished in the Flood) and can be interpreted as Deckard's view of Rachael stemming from Gaff's consciousness, Deckard put Passed and fell in love with Rachael, and it also stemmed from Gaff's feelings for Rachael, and finally let Gaff choose to let her go after learning that Deckard disobeyed the order, leaving only a paper folded unicorn on the ground. .
Another point is the change in Gaff's attitude towards Deckard, most of the time before the film's climax, watching Gaff's expression carefully, and the way he greets Deckard (knocked with a stick instead of his hand) is clearly an attitude of disgust. This is logical. A replica with part of your memory is doing the job you used to be the top 1. Will there be a sense of contempt in the face of fakes and the pain of arousing your own wounds? But after the fight on the roof at the end of the film (Roy hangs up, Gaff appears immediately, indicating that Gaff has been watching the battle without interfering, but has been monitoring Deckard, taking care of every time Deckard takes the spaceship to the destination is driven by Gaff—— Who better to do the job than Gaff?) When he returned the pistol to Deckard, he was no longer in disgust, but with seriousness, satisfaction, and approval, not because Deckard had successfully killed him four replicants - he said: "You've done a man's job". (to be a man, not replicant) This is Gaff's ultimate compliment to Deckard, he respects Deckard as a human equal to himself .
Gaff finally said: It's too bad she won't live, but then again, who does? The won't live in this sentence obviously corresponds to the myth of Unicorn. Replicants are even more human than humans but cannot survive for long. So who can be considered to have existed (alive)? Gaff's emotion is also the reason why he chose to let Deckard go, reminding him to go home and take Rachael to escape.
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