Corrected entry: In Predator 2, the predator's weapons (spear, etc.) were visible while in use. In AvP, the weapons (for example, the blades on their wrists that they stab people with) are invisible when the predator is. Can't have improved in the few years between Predator 2 and AvP, as the Predators are seen to have similar technology many years before in the pyramid scene.
Correction: There's 14 years between Predator 2 and AvP. A hell of a lot can change in that time. For an example, look how far mobile phones have come.
Also, it doesn't need to be a technical advance. It could just be a style choice by the Predators. Same as real life hunters choosing to paint camouflage on their rifles or not.
Corrected entry: When the chief Predator turns the woman's face in the scene where they take the body of the dead Predator on to their ship: He turns the woman's face with his hand to look at the 'tau' mark but we are shown this in visible light where as we all know the Predators can't see for toffee in visible light, so this shot should have been shown through the Predators visible wavelength. But would he have been able to see it in his own wavelength?
Correction: Logically, yes, the Predators must be able to see such a mark. If they couldn't, there wouldn't be any reason for them to use it to mark themselves - what's the point of a mark of honour that can't be seen.
Corrected entry: In the scene where Lex is confronting the queen, she is using her "spear" which she left down in the tunnel earlier.
Correction: You can see the Predator carrying it, when they are running from the tunnel.
Corrected entry: The Queen gets defeated by dragging her underwater with a water tower. We saw in Alien: Resurrection that Aliens can breathe underwater. All the Queen needs to do is cut the chain (if she can burrow through kilometres of snow in minutes, she certainly can cut the chains) and she can go and do as she pleases.
Correction: We saw them swim. Nothing indicates that they can breathe, indefinitely, under water. It's also not necessarily the lack of breathing that will stop the queen, but the extreme cold. Also, as seen earlier, she can't cut them. Her subordinates bit her causing her acid blood to dissolve her shackles.
Corrected entry: The movie states that Aztec calendar (long count) is metric but it is not, it mainly uses base 20 and base 18 (see http://webexhibits.org/calendars/calendar-mayan.htmlAnchor-What-65428). Furthermore, the 'combination lock' and character dialog indicate that the Predators return every 100 years. The concept of a century is relatively modern and not known to Egyptians, Aztecs or Cambodians of ancient times (nor would it fit into their calendar system). Since the movie suggests that the aliens heavily influenced human civilization, one can reasonable assume that the resulting calendars would correspond to Predator traditions. Clearly this is not the case. (00:37:25)
Correction: Ok, first of all Aztecs (the ones of the movie) and Mayans (the ones of the website you provided) are two totally different populations. Said this, a year is just the time the planet needs to complete a rotation around his sun so the predator, for some reason, might have decided to come on Earth every 100 'rotations', and a base 20 calendar (like the one you talked about) would fit into this.
Corrected entry: When the queen is freed by the other aliens, it looks huge and they are able to crawl all over her. Yet when she runs through the tunnel, she only breaks a bit off the edges, whereas the other aliens can make it through without much room at the edges.
Correction: When the Queen is released she sheds her egg sack, so she loses about 60% of her previous size.
Corrected entry: Weyland's satellite is shot in such a way that it resembles the frontal section of the Sulaco ship from "Aliens" (1986).
Correction: Actually the satellite is modeled to look like the alien queen when viewed at a certain angle, as revealed in the DVD commentary.
Corrected entry: The photographic and video equipment Ewen Bremner uses would not have lasted ten minutes in those temperatures. It looks like the basic off the high street shelf stuff, and not protected against the extreme cold, all the tiny motors and switches would have frozen-up before they reached the pyramid.
Correction: Considering the amount of money Weyland has, it wouldn't at all be difficult for him to purchase equipment to last in the Arctic. And as the equipment doesn't fail, it's obvious they knew to bring things that would survive the weather.
Corrected entry: There is absolutely no way there could have been that many aliens throughout the course of the movie and especially in the end. For an alien to exist a host is required, such as a human or predator, and there weren't nearly enough hosts to produce the number of aliens we see. In addition, most of the predators and humans were killed during combat, rendering them useless to the aliens. The stupidity of this mistake has no boundaries.
Correction: Let's see, there should be ten adult Aliens. There were seven created in the Sacrificial Camber. And assuming that any humans that were attacked by Aliens are taken to be hosts that would be three more, Miller and the two soliders. Now, one Alien was killed when its head was sliced off, one was speared by Lex, two were shot by the Predator's shoulder cannon, and I was able to count six Aliens when they were freeing the Queen. So, the amount of Aliens seen is consistent with how many that were created.
Corrected entry: Near the beginning of the film when we see Miller in one of the rooms in the Whaling Station, he looks at his camera to set a timer on it to take a picture of himself. If you look closely on the camera's digital display it says 12/10/2004. Later on when the group arrive in the sacrificial chamber, the scientist with the video camera is talking with the woman with the short blonde hair, the shot goes to a view from the camera, it says 10/10/2004. (00:19:45 - 00:34:15)
Correction: Demonstrating the fact that people don't always set the digital displays on their cameras properly.
Corrected entry: In the middle of the film, when the pyramid configures itself, trapping everyone in different compartments, Miller and the other guy are talking in one of the compartments, if you notice when the camera cuts to the other guy for the first time, the symbols on the pyramid are on the left of the guy, yet in other shots the symbols are on the right. (00:47:15)
Correction: If you watch in the overhead shot there are four monuments with the same symbols on each side of the room. No wonder they appear to change sides between the shots.
Corrected entry: When all the doors close inside the pyramid, the woman inside the sacrificial chamber tries to put a wedge under the door. There is one box by the door and one next to the wall by the door. Just after the door crushes the box, she moves back, and the box by the wall has vanished, then reappears. ( Slo-Mo maybe required ). (00:40:35)
Correction: I watched it in slo-mo and as far as I can tell the box is in every shot, except for one where it simply is out of camera angle.
Corrected entry: When we see Lex in the whaling station scene, she opens a door to see Weyland with his inhaler, if you notice when she opens the door he is holding it with his right hand, then in the following shot he is holding it with his left. (00:22:20)
Correction: There is a shot of Lex with enough time for Weyland to put the inhaler in his other hand, which makes sense as he reached for the inhaler lid with the hand he held the inhaler with first.
Corrected entry: As the crew begins their trek to the whaling camp, their faces are almost entirely exposed throughout the journey. With all her talk of safety and being prepared, you would think that Lex would encourage complete coverage against the elements. Wouldn't this result in severe frostbite in the middle of Antarctica?
Correction: Not necessarily. They travel most of the trip to the whaling camp inside a snowmobile. And covering their faces is only needed when it's windy, which it isn't in this case.
Corrected entry: Close to the beginning, when Lex, Sebastian, and Miller are talking on the side of the boat, the life preserver in the background keeps changing from left of the hatch to the right. (00:11:00)
Correction: No, if you look closely the life preserver is left to the hatch with the writing "Cabins 7-14" above it. Then you see the life preserver to the right of the hatch with the writing "Cabins 15-21" above it.
Corrected entry: As shown in the scene where the Predator let's Weyland go after discovering that he is riddled with cancer, and thus not worthy 'game', the Predator's won't hunt something that they feel won't offer much of a challenge. So why does one kill a guy who is lying partially frozen on the floor, with no weapon whatsoever, and most likely had a large number of his bones shattered after falling down an enormous shaft? Seems inconsistent with their way of hunting. It's not as if he had previously proved to be a worthy opponent, all he did was run away and fall down a hole.
Correction: Possibly you didn't watch very carefully as he does rather more than just run away and fall down a hole. He picks up a gun and fights back - he then tries to defend himself against the Predator hand-to-hand before being knocked down the shaft. More than enough for the Predators to consider him worthy of killing.
Corrected entry: How does the Italian guy manage to work out that the pyramid reconfigures every ten minutes when it only happened once. For all he knew, it could reconfigure at completely random times.
Correction: He's proposing a theory that it changes at that interval, one that is subsequently proven to be correct. It could have changed at random intervals, yes, but it's a reasonable supposition, given the mechanical nature of the place, that it would take place at regular intervals and given the use of the metric system, ten minutes is a reasonable time period to suggest.
Corrected entry: The whaling station should have been totally covered in snow after 100 years.
Correction: Antarctica is technically one of the driest deserts on the planet, averaging less than one inch of precipitation annually. With windspeeds on the coast (where the movie was set) reaching up to 198 MPH, most of the tiny amount of snow that does fall is simply blown around; very little of it accumulates.
Corrected entry: The Queen is dragged under the sea by a water tower filled with LIQUID water. Seeing as this tower is part of the original whaling station (and thus has been exposed to the sub-zero temperatures of Antarctica for 100 years) shouldn't the contents inside just be one big block of ice? The only reason I can see for it being otherwise is that a frozen tower would float and prevent the Queen from sinking to her doom.
Correction: Tanks don't have to be filled with water - given that this is a whaling station, you would expect them to have a supply of oil and fuel for ships.
Corrected entry: When they first try to decrypt the hieroglyphics they wipe away spider webs. It's too cold in the Antarctic for spiders to survive, and the webs should've decayed quickly.
Correction: The pyramid was in an ice cave (actually very good insulation) and was heated, so they could have survived.
Correction: The trilogy has taught us that predators hunt in clans, probably for competition. This could simply be a different clan than in Predator 2, with access to better weaponry.