Android Dreams: It's too bad she won't live! But then again, who does? !!

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 the Tannhauser gate. All those moments will be lost in time... like tears in rain... 

  Early in the 21st Century, THE TYRELL CORPORATION advanced robot evolution into the NEXUS phase - a being virtually identical to a human - known as a Replicant. The NEXUS 6 Replicants were superior in strength and agility, and at least equal in intelligence, to the genetic engineers who created them. Replicants were used Off-World as slave labor, in the hazardous exploration and colonization of other planets. After a bloody mutiny by a NEXUS 6 combat team in an Off-World colony, Replicants were declared illegal on earth - under penalty of death. Special police squads - BLADE RUNNER UNITS - had orders to shoot to kill, upon detection, any trespassing Replicant This was not called execution. It was called retirement.