Factual error: In the beginning of the movie, during Dickens' visit to America, you can hear them playing the melody from the song "I'm a Yankee Doodle Dandy" written by George M. Cohan in 1904. This was 61 years after the events in the movie. In the ending credits they cite this as "Yankee Doodle Dandy" which was written many years before. But, that was not the melody that was being played.
Visible crew/equipment: When Renton is singing at the pub, he approaches Simon playing the piano to let him sing a line. In the shot before he places the microphone under Simon's mouth, Renton is shown moving the microphone away from his mouth, and a camera can be seen attached to the microphone, to film the shots from the perspective of the microphone. (00:43:45)
Continuity mistake: With awkward timing that brings the table conversation to a screeching halt, Thomas says that "New York lost its soul." The woman next to him was having a glass of wine, but it is down on the table in the next shot. George also has his glass raised (we see it in foreground when Thomas explains himself) but it's on the table in the wider angle. (00:11:20)
Factual error: The accident takes place the night of July 18, 1969, and they show there being a full moon. That night the moon was actually waxing crescent with only 14% visible, and set at 10:27pm while the accident happened about 12:45am, so there was no moon in the sky anyway.
Continuity mistake: The protagonist is driving his diminutive car to the villa. In the view from the villa (Avishai Cohen's name pops up) you can see a large shadow covering the area of the gate. In the reverse shot that part of the road is fully lit. (00:06:00)
Continuity mistake: While Jim is narrating his story, he gets to the point when his son was hit by a drunk driver. The line slows down, but when it cuts to a close-up of Renée Zellweger saying "Sorry Jim", you see the trays shift. Only, they are back in the exact same spot as before when the close-up is over. (00:28:20)
Factual error: A group of people are traveling in a pickup truck escaping earthquakes and volcanic eruptions. They come across a mist that they identify as sulphur dioxide, mainly by its smell and effects on people. Then the plastic interior of the car starts to melt, and they attribute it to the sulphur dioxide. Sulphur dioxide can attack plastics and rubber, but only in its liquid form. It turns gaseous at -10° C. After that it is a gas. So the melting of plastic is not correct at ambient temperature.
Continuity mistake: When the soup is about to be served, you see the horns blowing to introduce Victoria, and you can see all of the footmen lined up already with trays of soup, but in the next shot, it shows that they are just starting to march in to line up with their trays of soup. (00:10:45)
Continuity mistake: Man-seob smears some cream above his upper lip after a few smoke grenades are deployed. The amount of cream shown over his upper lip changes between shots.
Factual error: In the movie the professor's assistant says thst the professor was in OSS in the great war (WWI). OSS was first formed in 1941 by President Roosevelt.
Continuity mistake: Michele Riondino has just killed the snitch and is going after the witness, a Chinese woman. He holds her at gunpoint; she does not move, but in a shot she has hair in front of just her left shoulder, both shoulders in the next. (00:30:30)
Factual error: The musicians in the (real) Band of the Coldstream Guards that plays Happy Birthday for Christopher Robin are wearing their 21st-century uniforms and medals.
Other mistake: The Space Agency is trying to use an android mechanism (Human 2.0) to go to The Void and make first contact. Their first attempt at putting a human brain into the android fails. The solution is to make the android mechanism imprint human cells to facilitate the brain/android connection. The Agency is up against a time constraint, and someone comes up with the idea of using military Humans 2.0 to go on the voyage. Wait a minute! So now we learn there are other Humans 2.0 in existence? Wouldn't whoever made those already know how to solve the human brain/android interface? Why is the Space Agency reinventing the wheel? (00:40:55)
Other mistake: It was dark outside, so the car that hit Pete was difficult to see, but it did not have the damage that would be expected. It appears the front end - including headlights - did not suffer obvious or major damage. The right side doors appeared to be dented, but that side did not hit Pete. The front windshield looked shattered but intact and the roof did not look damaged. A 3,000lb sedan colliding with a 1,000lb or so horse that hit and went over the hood and roof would be crushed. (01:29:00)
Factual error: Emmanuelle Devos goes to the airport to get her husband and daughter. Their plane landed at 7 PM (18:58 to be precise) as shown by the airport monitor. They get a cab to a hotel downtown, and then there's a scene when she books a restaurant from the hotel room. She tells her husband, who just took a shower, that they need to be at the restaurant at 8 PM. Her husband says that there's no rush then, since it's only 7 PM. Of course that's impossible, the Turin airport is about 20km away from the part of the city they are driving through, which at that hour has also significant traffic; if their plane landed at 7, at 8 PM they would hardly have any time left to spare. (00:29:00)
Factual error: Just after feeling the explosion from the south tower, Eddie's watch shows 17:37 whilst others and himself are stuck in the North tower elevator. The planes hit the towers in the morning. (00:35:00)
Continuity mistake: At the grocery store, Peter places a bunch of bananas onto the left-hand side corner of the conveyor belt. When the camera redirects shortly and returns, the bananas are on the opposite side. Similarly, the bag of lettuce Susan was about to place onto the conveyor belt is not there. (00:23:31)
Factual error: The black leather chair of the Home trust banker is more modern than the movie setting in 1922. (00:59:35)
Continuity mistake: When the woman is sunbathing topless, the sun goes from being overhead in the far shots to in front of her in the closer shots. See also the difference in exposure.
Other mistake: Derek changed into Tyler's clothes to escape the hospital and take on Tyler's identity. However, it does not look like he remembered to put his blue hospital ID band onto Tyler's right wrist. Hospital bands are usually securely on and not easily removed (or removable without breaking them). When the nurse was removing Derek's (actually, Tyler's) wrist restraints, there was no blue hospital ID band on his right wrist. He asked, "How do I prove to you who I really am?" (No ID band!). (00:21:30 - 00:24:37)