[MaddogK]

Originally Posted by Dowly

Considering the DC and FC, the unicorn origami is definitely aimed at Deckard.
That's pretty much the point of the unicorn scene: to tie it with the origami
in the end and have the viewer put 2 + 2 together and figure out Deckard is
a replicant himself.

Sadly (or gladly) I read the original P.K.Dick story before the dir cut was released, so the suggestion from the later cuts didn't work on me.

Relevant opinions from those involved:

• Philip K. Dick wrote the character Deckard as a human.[17]
• Hampton Fancher (original screenwriter) has said that he wrote the character Deckard as a human, but wanted the film to suggest the possibility that he may be a replicant. When asked, "Is Deckard a replicant?", Fancher replied, "No. It wasn't like I had a tricky idea about Deckard that way."[18] During a discussion panel with Ridley Scott to discuss Blade Runner: The Final Cut, Fancher again stated that he believes Deckard is human (saying that "[Ridley Scott's] idea is too complex"), but also repeated that he prefers the film to remain ambiguous: "I like asking the question and I like it to be asked but I think it’s nonsense to answer it. That’s not interesting to me." [19]
• Ridley Scott stated in an interview in 2002 that he considers Deckard a replicant.[20][21]
• Harrison Ford considers Deckard to be human. "That was the main area of contention between Ridley and myself at the time," Ford told interviewer Jonathan Ross during a BBC1 Hollywood Greats segment. "I thought the audience deserved one human being on screen that they could establish an emotional relationship with. I thought I had won Ridley's agreement to that, but in fact I think he had a little reservation about that. I think he really wanted to have it both ways."[22] (However, in an interview in Wired magazine in 2007, Ridley again states that he believes Deckard is a replicant, and says that Harrison Ford may have given up the idea of Deckard being human.)[23]
• Edward James Olmos (Detective Gaff) explains that Deckard was also a replicant.[24]

http://en.wikipedia.org/wiki/Themes_in_Blade_Runner