"I've got to check [for spoilers] very carefully here", Scott tells the Sydney Morning Herald, "but it is about the beginning of life and 'what if'. It's a giant 'what if'. Has this ball that we're sitting on right now been around here for three billion years or one billion? Either way, it's a long fucking time. It's only our kind of arrogance that says 'We're the first ones.' Are we the first hominids? I really, really, really doubt it. In recent memory or legend we keep talking about wonderful, weird things such as Atlantis – what is that? Where does that come from? Is that real, was it real, is it a memory, did it exist? And if that did exist, did it exist three quarters of a billion years ago? There'd be nothing left now. How was that created and who was it?" As for how the film's characters tackle these themes... "They have a different thesis about – what we were first talking about – being pre-visited, which is an old idea. But I think it comes out of a good place because it's an entirely good question. Is there a God or is there not a God? Are we a petri dish here or not, and if we were a petri dish, of whom? What was the force, what is the entity that we can't possibly even fathom, because it's something we haven't crossed that line yet?"
"The question is, do you go for the PG-13, [which] financially makes quite a difference, or do you go for what it should be, which is R? Essentially, it's kinda R... It's not just about the blood, it's about ideas that are very stressful. I'm not an idiot, but I'll do everything I can to get the most aggressive film I can."
Executive Producer for the project, Michael Ellenberg described Ridley's mindset in making the film:
"Ridley was inspired by everything from the Nazca Lines in Peru, which are these vast Earth sculptures can only be seen from the air, to cave paintings in France, to ancient Egypt and ancient Mayan civilizations. We're pushing beyond what's been found thus far and speculating about what maybe found in the future."
Michael:
"'Prometheus' is basically about trying to find out if there was intervention in the birth of civilization on planet Earth by other beings, which we come to know as Engineers, and whether they had a master plan in mind for us... Each person has got their own agenda on that ship and it's each a very individual agenda.
Some people are there for the pay. Other people are there to get answers. Other people are there to hopefully attain some sort of secret. Others are there in somewhat of a spite journey. You've got all these collective relationships, individuals and motivations and that's what makes quite intriguing even before the shit hits the fan."
Original Source is here