by Loren Coleman ©2012
Frankly, watching Ridley Scott's Blade Runner is recommended to Prometheus analysts who wish to understand the genetic engineering of both treatments, more so that re-viewing the Alien films. (Of course, what might be happening on 10.11.12 - October 11, 2012 or November 10, 2012 - from the Weyland Corporation, remains to be understood.)
The term replicants is used nowhere in Philip K. Dick's writing. The creatures in the source novel are called Androids or Andies. The movie abandoned these terms, fearing they would sound comical spoken on screen. Replicants came from screenwriter David Webb Peoples' daughter, Risa, who was studying microbiology and biochemistry. She introduced her father to the theory of replication - the process whereby cells are duplicated for cloning purposes. (Peoples' is also known for his screenplays on Unforgiven and Twelve Monkeys.)
Replicants are slaves, and this movie is about slavery. As William Kolb writes in Blade Runner Film Notes: "Nexus is a Latin word meaning ‘to bind’ and refers to the tie between members of a group, e.g. members of a series. The replicants who arrive on Earth are literally and metaphorically the Nexus-6."
Blade Runner Curse
Sources on linkages and symbolic connections in Blade Runner and Prometheus are to be found in the hundreds throughout the Internet, and specifically include various trivia authored by many contributors to IMDb and these movies' critics' websites. Additionally, Wikipedia has been used, when appropriate, for general information that is well-cited and generally known. Please do your own background original research, if you wish, to dig into any specific area discussed. For more insights on Prometheus, please see also here.
Synchromysticism is defined as the drawing of connections in modern culture (movies, music lyrics, historical happenings and esoteric knowledge); and finding connections that could be coming from the "collective unconscious mind"; and finding connections between occult knowledge (i.e. esoteric fraternities, cults and secret rituals), politics and mass media, according to Wiktionary.