That's pretty funny.
I was watching the film on Blu-Ray last night and I realized several things.
1) When they enter the atmosphere of LV-223, it appears as if they've been sending out signals, hoping for a response from the engineers. They get none, but one of the guys says they're picking up spots of heavy metals on the planet. The atmosphere doesn't contain these heavy metals (Nitrogen, Oxygen, Carbon Dioxide and argon traces is what we're told). They then seem to be heading in a specific direction, and find the installation within minutes. And I was wondering: did they go towards where the heavy metal spots were? If that were the case, then that may be why they seemingly instantly found the Engineer structures.
2) The 36 hours thing may not, actually, be a mistake. We know Weyland terraformed. Is it possible it was based on the time of another planet, whose days were longer than Earth's?
3) Holloway appears to be drinking not because he didn't get to meet with the Engineers, but because he was freaked out and stressed from almost losing Shaw in the storm. The 'not getting to speak with them' angle seems secondary.
4) The 'no contagion present' line is not incorrect: they put the head in a decontamination chamber to make sure it was sterile. As we all know, this is a helmet. The helmet may have been decontaminated and no contagion present on it. But it clearly didn't scan the interior, the actual head.
5) The electrocution is definitely not responsible for the explosion of the head, as they pull it out and the head continues to go crazy for a little while afterwards.
6) The crew appears to have been exploring a little while when they come upon the hologram, going some way to explaining why Fifield and Millburn got lost.
7) Fifield and Millburn getting lost is still a bit weird, and so I took some mental notes throughout the whole ordeal.
a) Fifield says 'the pups say go this way'. As there is no destination that they seem to be heading for, this line seems to indicate that Fifield is simply following the pups further into the structure, and does not imply that he has access to the map, merely locations of the pups.
b) The pups mark the individuals' locations, but doesn't register them moving (i.e it indicates their initial positions, but in the hologram on the ship these stay where they are despite the crew moving further into the structure). After everyone leaves except Fifield and Millburn, only those two have signals left, but they are still in the same spot. Somehow, the others' were deactivated. This would explain why Janek asks for their position instead of checking it himself.
c) Fifield and Millburn still have access to coordinates, but these would prove quite useless if you're lost.
d) Janek has no contact with Fifield and Millburn until he realizes they're lost. This indicates two things. Firstly, Janek must not have even paid attention to them when they left. Why? No idea. Probably thought they wouldn't need help, was watching the non-cowardly crew, and paying attention to the shitstorm approaching. Secondly, it indicates that F and M didn't realize they were lost until it was too late, evident in their 'We've been here before'.
8 ) The worms appear to be in the structure naturally, as there's some near the entrance of the ampule room, and directly underneath an ampule (when they first begin to leak, we immediately see worms trying to wriggle out of the goo).
9) The Shaw Baby Part 1: Why didn't Ford and Co. follow Shaw when she ran out? Well, Ford and the other guy were wearing biosuits which were made of some sort of soft plastic: Shaw pushes the see-through bit of the other guy's suit into his face. The rest of the suits was similarly fragile, like modern day biohazard suits. Therefore, her hard swing of the instrument would certainly have caused significant harm, as the suits were weak and not meant to take a physical beating. Ergo, they didn't follow her.
10) Shaw Baby Part 2: How is Shaw able to run around? I've already worn my keyboard out talking about constantly being pumped with future drugs and topically applied anaesthetic dulling the pain. But what I hadn't noticed was, mere moments after the surgery, we get a glimpse of her wound and it appears to have completely healed, and only a flesh-coloured scar remains. This may still very well be painful (as we see with her constant moaning), but it nonetheless provides a reason why the wound didn't re-open. How did it heal so fast? I don't know. Maybe the topical anaesthetic had a healing effect too. No idea.
I might have more later, but lunch time is now.
Alright, I'm back.
11) It appears as though the live feed to the Prometheus isn't actually recorded. As Cvalda brought up in another thread, why wouldn't Janek and co. check the tape before going out to find Millburn and Fifield? Shaw has a recording of her expedition that she watches before her sex with Holloway. Which leads me to believe that the videocamera feeds are saved somewhere in the wiring of the suit (Shaw had access to the suit, played back the video), but the live feed to the ship is simply that: a live feed, not saved there. Either that, or we accept that Janek and co. didn't think before going out.
12) When Weyland, David, Shaw and co. go out to find the last engineer, we see something contradicting 7 b): They have moving signals. I'm lost at this point. I'm assuming they have added beacons to their suits, as we clearly see nobody's signals moving earlier.
