Visible crew/equipment: During the briefing Weyland says "But it's not on the ice, it's two thousand feet below it" it cuts to a shot behind Maxwell with an overview shot of the crew. If you look behind Maxwell you can see the tip of a head moving into picture. In the previous shot we could see no one was standing behind Maxwell, and it couldn't be Sebastian cause he went back to his seat. (00:07:55)
Alien Vs. Predator (2004)
1 visible crew/equipment mistake
Directed by: Paul W.S. Anderson
Starring: Lance Henriksen, Ewen Bremner, Sanaa Lathan, Colin Salmon, Raoul Bova
Factual error: When they're first entering the whaling camp, a penguin startles Miller. That penguin was a black-footed penguin, which is a bird native to much warmer climates. If that little guy had actually been in Antarctica, he would have died within minutes. (00:20:40)
Alexa 'Lex' Woods: How do you say "scared shitless" in Italian?
Sebastian de Rosa: Non vedo l'ora di uscire da questo piramide con te, perché mi sto cagando addosso. More or less.
Trivia: The way Thomas shines his torch on the eggs that have just popped up in the Sacrificial Chamber (illuminating the facehugger inside) echoes the scene in the original Alien where Kane does the same thing to the eggs found in the hold of the ship.
Question: Can anyone tell me why the Predators didn't scan the 'token' human survivor or the last dead predator to see if either were infected with an Alien? Especially when the Predator was not wearing his face mask which would serve as protection against this infection.
Chosen answer: Given the speed with which the chestbursters emerged from the other humans, it seems likely that these have been engineered by the Predators to emerge as quickly as possible. As such, they probably assumed in Lex's case that, were she impregnated, it would have emerged before that point. As for their fallen comrade, it may well have simply not occurred to them that one of their number would be foolish enough to get himself impregnated. Even proud alien hunters can make mistakes.
Answer: When they emerged from the underground pyramid unscathed, the Predators assumed they were not infected. Any Predator, young or old, would have been taught to self destruct rather than be caught or killed. As seen in the previous movies. Lex was given the mark of a warrior, they assumed she was taught their code of honor.