“[For] Prometheus, it would have been very easy—in fact probably in Chapter One of the Executive Handbook, if I ever read such a thing, it would say, ‘Go ahead, make a straightforward prequel to Alien.’ That would have been the easy thing to do. ‘Prometheus is the more challenging thing to do. It’s bolder, it’s original, it’s in the universe, but it’s not a literal story-based prequel to [Alien], it’s a wholly new science-fiction entry from Ridley Scott, who hasn’t made a science-fiction film in 30 years.
I can assure the fans—I’m very aware of their concern—absolutely they can take it that the film will not be compromised either way. So if that means that the film is R, then it’ll be an R. If it’s PG-13, then it’ll be a PG-13, but it will not be compromised.”