10 Movie Mysteries That Should NEVER Have Been Answered

There has been one question associated with Blade Runner since its own inception date of 1982 - is Deckard a replicant? This enigmatic question would drive the story and pose the larger philosophical question of the nature of sentience - do androids indeed dream of electric sheep?

Multiple versions of Blade Runner exist but there are three definitive cuts; the 1982 theatrical cut (featuring a studio sanctioned narration from Harrison Ford and a 'happy ending' where Deckard and Rachael escape together), the 1992 Director's Cut (with an additional dream sequence, minus narration) and the 2007 Final Cut (no narration, no happy ending, with the unicorn dream sequence and additional, previously censored violence).

The insertion of the dream sequence appeared to finally answer the question. Deckard's unicorn dreams are implants, otherwise how would fellow Blade Runner Gaff know to leave the origami unicorn in Deckard's apartment? Scott himself was emphatic on the question of Decker's humanity, saying in 2012: "He was a Nexus-6, so we don't know how long he can live. And that's all I'm going to say at this stage."

In the novel, Deckard takes the Voight-Kampff test and is implied to be human so why would Scott, after starting the debate, want to definitively humanise Deckard? It takes away the audience's ability to ask the question itself and by proxy, much of the ponderous, philosophical nature of the film and its continued discussion.