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http://screenrant.com/alien-prequel-...e-sandy-55761/
Ridley Scott's own words:
“As we speak, I’ve got a pile of pages next to me; it’s like the fourth draft. It’s a work in progress, but we’re not dreaming it up anymore. We know what the story is. We’re now actually trying to improve the three acts and make the characters better, build it up to something [we can shoot]. It’s a work in progress, but we’re actually making the film. There’s no question about it, we’re going to make the film.”
http://www.guardian.co.uk/film/2010/...alien-prequels