Maybe it'll make more sense in the extended director's cut.

Rating: 6/10 (15 October 2012)

One of the most enduring and engaging aspects of the whole Alien series has been the speculation concerning the origin and evolution of the xenomorph, and the conjecture about whether the creature's existence is somehow linked to that of the human race. Ridley Scott's sci-fi prequel Prometheus sets out to answer some of these questions, while providing viewers with further questions on which to ponder until the inevitable arrival of Prometheus 2.
Of course, inviting the audience to study every last detail of a film in search of answers is only a good idea if the script has been so carefully crafted that it can withstand such intense scrutiny, which is most definitely not the case with Prometheus: between them, writers Jon Spaihts and Damon Lindelof have somehow managed to cobble together a mess of ill-considered plot progression, moronic characterisation, and weak exposition that is a million light years away from the perfectly profound experience that was undoubtedly intended. In short, the script sucks.
It's a good job then that director Ridley Scott has made his film such a magnificent feast for the eyes, the impeccable visuals being its one true saving grace. Such is the incredible quality of the CGI, the amazing spectacle of the action, the pure majesty of the scenery and the sheer inventiveness of the production design, that I actually found it within myself to cease dissecting Prometheus and simply enjoy it for the incredible over-blown spectacle that it is. F**-off big spaceships, impressive alien landscapes, an exploding 2000-year-old decapitated head, thrashing tentacled squid-like creatures, powerful mutants, and Noomi Rapace wrapped in skimpy bandage-like underwear: that'll just about do me until something resembling a well-thought out plot comes along.