Harry Potter TV Series

The book is very different from the movie. I'm referencing the film.

In order for Deckard to be a replicant, all the cops, his landlord, the noodle guy, they'd all have to be in on the conspiracy to keep him fooled into thinking he's a human Blade Runner.

As far as the movie, I would agree that I never got the conclusion from the movie that Deckard was a replicant. If it was Scott's intention to imply that Deckard was a replicant in the movie then I think he missed. Although I will say that I think there is a cut of the movie where it seems more obvious. It was the book that made me think Deckard was a replicant. I saw the original cut of the movie several times before reading the book and the book was the first time I got the idea that Deckard was a replicant.