I mean that's what Scott claims I guess that it was always his intention but it really seems like a pointless twist thrown in for the directors cut. The whole

I mean that's what Scott claims I guess that it was always his intention but it really seems like a pointless twist thrown in for the directors cut. The whole point of the film is Deckard (a human) learns the humanity inside the machines, not Deckard learns he's one of them which is a far less moving story. It's supposed to be ambiguous at points like in the book to emphasize the question of what makes a human but ultimately he should be human. Given the 2nd film's explanation for how he's a replicant is seriously contrived I have to say it seems like a retcon to me. In any case given there are multiple cuts of the film, I'll choose the Final cut minus the Unicorn dream as my ultimate version of the film.