Factual error: When Nate dies by the alien moon rocks, his helmet visor "explodes." The visor in the film shatters like glass, but the real visors on actual spacesuits are made of polycarbonate, a plastic that does not shatter but deforms.
Factual error: When the first robot is trapped in the lift, the teenagers shoot the propane tanks on top of the lift in order to get them to catch fire and explode, killing the robot. However the teens are firing pistols or shotguns, and these do not contain incendiary ammunition, which is what is required to make the propane to catch fire.
Factual error: On the left-hand side of Lucy's front door, you can see a blue and white shield. This is the trademark of the Dutch Heritage organisation, which protects monuments such as old city buildings. These signs did not exist in the 19th Century. (00:48:00)
Factual error: Abby has trees surrounding her house yet there aren't any in Nome Alaska.
Factual error: During the decompression the plastic water bottles crush. The opposite should happen, as a decrease in external pressure would cause the bottles to expand.
Factual error: At the end, you can see Kimberly hanging in the background. After being cut in half, I doubt your clothes would stay on. (01:26:00)
Factual error: In the scene in Costa's apartment after the failed baiting ploy, Costa describes himself as a loner who "bought a gun for a false sense of security", appeared to have had it with him during the evening, and gave the impression that he bought it after he witnessed the murder. Although IlIeana mightn't know, the Montreal police in the room might (should) have wondered about this. Even if legal, it is very difficult to acquire a restricted weapon (handgun) in Canada, the process taking one month to as many as six or more for clearance and permits, let alone courses and examinations. In addition, concealed carry of a weapon is prohibited for civilians. (01:00:25)
Factual error: At the start of the war, it says Fort Sumter 1861. However, on the battlefield we see the US flag with 35 stars. In April 1861, there were only 33 states.
Factual error: When Talbot is first in Gwen Conliffe's shop in London, there is a vase of flowers containing Stargazer lilies. The Stargazer lily wasn't created until 1978 by Leslie Woodriff.
Factual error: In the fire at the lighthouse, Stevie puts her hand on the fire extinguisher nozzle. It would have frozen her hand and made it stick to it.
Factual error: The license plate of the car that takes the protagonist to the sanitarium is GR 36E46. That's not a valid Swiss plate: GR indicates the canton of Graubünden, but other than that it is supposed to have only digits and no letters.
Factual error: When Angela is watching the security video on her laptop of her sister committing suicide, you can see she's playing it using Quicktime. She rewinds a couple of seconds by clicking on the first button of the video player. Actually, when you click this button, it takes you to the beginning of the video. The second button would have rewound it a short time. (00:25:20)
Factual error: In the scene where Olivia's body is being removed from her home. Olivia was covered in blood, yet the sheet covering her has blood only in her chest area. The sheet would have had way more blood on it. Also, I'm an EMT, sheets are not used on victims that are dead. A body bag that zips closed and is made of rip proof plastic is used to transport deceased victims (especially if they are as bloody as Olivia was supposed to be). White sheets on a corpse are only seen in the morgue. (00:40:00)
Factual error: There is no possible method of "fusing" the genetic material of a common housefly (Musca domestica) and a human. The housefly has twelve chromosomes, humans forty six. There is no way to combine the two in order to produce a viable organism. Thirty four of the human chromosomes would have no matching chromosome to "fuse" with, meaning the physical characteristics coded by those genes would not form. The Brundlefly would be missing three quarters of his human body.
Suggested correction: There's no possible way of teleporting physical objects either, but it happens in this movie. This is science fiction. These kinds of "factual errors" are not valid.
The film presents no scientific explanation for "teleportation" but does for "genetic merging." Teleportation is possible in this film's universe, but "genetic merging" is impossible in any universe.
Factual error: The movie depicted the use of obstetrical ultrasound. While ultrasound was first "perfected" in the late 1950s, it wasn't used in British hospitals until the 1970s and not in US hospitals until well into the 1970s, well past the setting of the movie in the 1960s.
Factual error: When you see the blind Syndey walk through her appartment she keeps touching the walls to feel where she is. A person who has been blind for over 20 years (as is mentioned in the film) knows the way around their own home. They know preciseley how many steps it is from room to room. They wouldn't keep touching the wall like this.
Factual error: When J.D. gets killed, Vince's leg shakes. Vince is suppose to be paralyzed. Even if he was extremely scared, his leg shouldn't have been able to move no matter how much he tried. It happens again later in the movie. (00:30:55)
Suggested correction: During the film, its never discussed whether or not Vince is paralyzed. He may just have a damaged spine. The scene where his foot is shaking, the entire camera frame is pointing directly at his feet. Seems unlikely that would have been included, if he was playing a paraplegic.
Factual error: While Sgt Howie (dressed as Punch) is being chased by the women, you can see autumn leaves on the grass, though the story is set on the 1st of May.
Factual error: At the end of the movie there is the chase scene through the hedge maze in the dead of winter in Colorado. While Jack Nicholson runs after his son in a winter setting you cannot see their breath in what would be the cold night air.
Factual error: When Julia goes to see her childhood psychologist, there is a fish in a bowl sitting next to the window. This would kill a fish within a day or two because of the heat being magnified by the window.