One of the biggest failings of this movie was its inability to explain why the characters acted the way they did. Which, you know, is kind of an important aspect of storytelling. Alien was simple: the crew of a mining vessel happen upon what appear to be the ruins of an alien structure and accidentally bring an alien onboard their own ship, causing chaos and disaster. Prometheus, though, is a far trickier story to tell, mostly because Ridley Scott made it difficult for himself. — from Costume design and the crew of Prometheus.