Question about Deckards knowledge of the Nexus 6
My knowledge of the film is fairly vast ( yes I have read Future Noir) but a question remains. In the opening paragraph of the movie it specifically states " after a bloody mutiny by Nexus 6, replicant were declared illegal on earth". Clear enough. But when Bryant briefs Deckard on the escaped reps in the beginning of the movie he explains to Deck what Nexus 6 are. This has always seemed a little strange considering Deckard is a veteran BR.( I know that this dialogue was inserted to inform the audience that Nexus 6 Reps have 4 year life spans etc. but Deckards ignorance seems out of context) Thoughts?