in the replicants’ driving desire to survive, which they have come to share with humans.As Deckard attempts to find and destroy them, he grows confused about their humanity and his own. His job is to kill replicants, yet he has sex and falls in love with the female replicant, Rachael. (In a passage in an early script that does not appear in the film, a colleague reminds Deckard that replicants are just machines: “You got the feelings, pal, not her.You fucked a washing machine . . . then you switched it off.”)
On the replicant side, although Batty is robotically violent, killing as necessary in order to reach its creator,Tyrell, its destructive impulse is leavened by flashes of humanity.When they finally meet, Tyrell— like a father—tells the android that it is “The best of all possible replicants. We’re proud of our prodigal son.” In that moment, Batty humbly requests absolution for “questionable things” it’s done, which Tyrell gives. Immediately after, Batty cracks its maker’s skull like an eggshell between powerful hands, because Tyrell cannot or will not extend its life.
The interplay between Deckard and Batty peaks in a final scene where the blade runner tries to kill the replicant, which toys with him by displaying its superior abilities. At one point, perhaps recognizing their kinship as violent killers, Batty uses its speed and strength to save Deckard from a fatal fall. But Batty knows its clock is running out, and in a last speech (partly written by Rutger Hauer, who plays the replicant) says:
I’ve seen things you people wouldn’t believe. Attack ships on fire off the shoulder of Orion. I watched C-beams glitter in the dark near Tanhauser Gate. All those moments will be lost in time, like tears in rain . . . time to die.
In the original theatrical release, after Batty dies, Deckard adds in voice-over:
I don’t know why he saved my life. Maybe in those last moments he loved life more than he ever had before. Not just his life, anybody’s life, my life. All he’d wanted were the same answers the rest of us want.Where did I come from? Where am I going? How long have I got? All I could do was sit there and watch him die.