Philip K. Dick wrote the character Deckard as a human in the original novel in order to explore the increasing similarity of humans and replicants. However, the film significantly diverges from the book, e.g. the book states explicitly that Deckard passed the Voight-Kampff test. Screenwriter Hampton Fancher has said that he wrote the character 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." 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 "[Scott's] idea is too complex"), but also repeated that he prefers the film to remain ambiguous.