Bladerunner: Eyes and Other Organs.

As mentioned eyes play an important role in the movie.  I'd like to point out that the person Roy and Leon target first is the person who created their eyes.  This is important since eyes are often thought of as windows into the soul.  There must have been multiple people that could have had the information they needed however they chose to go after the one that figuratively gave them their souls.  This shows the replicants innate connection to human ideas.  Roy and Leon are starting to break down the line that separates the humans for the replicants, the artificial from the organic.  Another important scene is when Roy kills his creator Eldon Tyrell by gouging his eyes.  The chosen method of murder was to destroy the window to Eldon's soul.  Roy is literally destroying what figuratively makes Eldon a human.  This again shows Roy's innate connection to human idea's and his attempt to break the line between human and replicant. 

Rachel represents a fear of being inhuman and a confusion of what she actually is.  She comes to
Deckard in an attempt to prove to him that she's a human.  As Eldon says he thinks she is starting to suspect that she is a replicant.  But even with this suspicion she tries to prove that she's not and that she's a human.  This stems from a human fear of being not human.  From this also comes a confusion of what a human really is.  She has memories of a childhood.  She has emotions.  She's for all intent and purposes a human... but she's not.  In our present world this confusion is starting to grow more and more.  We've developed artificial heart valves and are on the verge of complete artificial organs.  If someone were to have one of these organs implanted within them would they still be a human?  This creates a confusion in what a human is.  This same idea can be applied to all technology.  Am I human even though I'm using this computer?  Am I human even though I use rocks and sticks as a weapon?  What's the really difference between an artificial organ and a sharpened stick besides the level of technology?  Both of them are used to keep their user alive.  In the movie the character Rachel forces us to think about this.  She confuses the line between human and cyborg.