Why does Roy Batty die in 2019?
Best Answer
It appears as though the leading cause of death in replicants is a form of cellular death, akin to 'old age' in humans.
Remember that in the first movie, Tyrell admits that the short lifespan was not by design, but was the only way they could create them in the first place when he says:
“You were made as well as we could make you.”
Much like humans, anything can reduce this life-span; not to mention the lack of accuracy in any lifespan. They are not robots, remember, they are still 'organic', despite their synthetic nature. As humans have a natural lifespan of 80 yrs (+/-20), it would appear Replicants are 4 years (+/-1).
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How did Batty die?
At the end of the movie, Roy Batty goes from being an apparently haywire maniac to being a Christ-figure. He pushes a symbolic nail through one of his hands before sparing Rick Deckard's life, and then he dies due to his expired time limit.Why does Roy stab himself?
Roy is already showing signs of his own impending death -- he stabs himself through the hand with a large nail to temporarily stabilize his condition.How did Tyrell die in Blade Runner?
He attempted to comfort Roy referring to him as the "prodigal son" and reminding him, "The light that burns twice as bright burns half as long." This did little to comfort Batty, who kissed Tyrell and then proceeded to crush his skull, killing him as the horrified Sebastian looked on.Blade Runner - Final scene, \
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Answer 2
As the text card at the very beginning of the film clearly states, the events in the movie take place starting in November 2019.
So one can assume that a replicant “born” on January 8, 2016 would start to slowly fall apart during the timespan from November 2019 to the beginning of January 2020.
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