Continuity mistake: When the Horsemen arrive at the Macau Science Centre, Allen Scott-Frank tries talking with the South African gangster and is ignored. The gangster rolls up the window and the shot cuts to the Horsemen. Daniel is shown looking towards Merritt, but when Allen says "or not" in the next shot, Daniel is suddenly looking at Allen. (00:54:05)
Audio problem: Shortly before going through the metal detector at the science centre, Allen asks Lula about an email she supposedly sent referring to maintaining quantum coherence at room temperature. After he finishes saying this, it cuts to a shot focusing on the Horsemen and Allen asks her, "Do you care to elucidate?" In the shot, the left-hand side of his mouth is visible, but his mouth isn't shown moving during the shot. (00:55:00)
Continuity mistake: When Allen mentions an email that Lula sent, Daniel is shown turning his head to the right to look at Merritt and Jack in a moment of confusion. It then cuts to a closer shot of Daniel and Lula, where Daniel's head is suddenly turned to the left to face Lula. (00:55:07)
Audio problem: When the Horsemen are at the science centre and are posing as doctors attempting to trick Allen, Lula says she did sent that e-mail and Daniel says "The other day, yes", but Daniel's lips do not move with the line. (00:55:10)
Audio problem: While the Horsemen are posing as doctors, Allen tells Lula it's actually topological quantum order after she asks him what gives. Then it cuts to a shot focusing on Lula where he says, "The emergence of quantum effects on a macroscopic level," but Allen's mouth doesn't appear to move during the shot. (00:55:45)
Continuity mistake: When Merritt sneezes, he says, "I must be allergic to something in here," and turns his head around to face one of the security guards. In the next shot, he is suddenly looking straight forwards at Allen. (00:57:23)
Continuity mistake: When Daniel is being given a pat down by the security guard, there is a shot where Lula is shown in the background and is the focus of the shot. She has her arms raised, but when it cuts to a closer shot of her, her arms are lowered. A security guard also appears behind her when the shot cuts. (00:59:40)
Audio problem: When the Horsemen are having their final checks at the science centre, just as Merritt is being checked, Lula is heard saying "I don't speak the language." Lula is visible in the background looking towards Merritt when she says this, but her mouth is not moving when she is speaking. (01:01:40)
Continuity mistake: When Dylan finds the safe that his father used while in the magic shop, he has his right hand placed on the top of the safe. In the next shot, he opens the safe, but his forearm cannot be seen next to his face, like it was in the previous shot, indicating his hand is not on top of the safe. (01:05:48)
Continuity mistake: When Dylan meets up with Daniel in Macau, Daniel tells him he cannot be seen with him. Daniel's hands are by his side, but in the next shot, he is suddenly has one hand on his ear. (01:08:55)
Continuity mistake: Daniel is about to give the chip to Walter and Dylan rushes in to stop him. When Daniel first takes out the chip, he has it in his right hand, but when Dylan pushes him up against the wall, the chip is suddenly in his left hand. (01:11:15)
Continuity mistake: Dylan tricks one of Walter's men into running into a glass window. Once the glass shatters, he has his left hand over his mouth (before beginning to lower it), and his right arm is lowered. When the shot cuts, he has both hands closed into fists and raised to his stomach. (01:12:22)
Revealing mistake: Dylan attempts to climb onto an above-ground platform, but is knocked off by one of Walter's men, causing him to fall to the ground and land on several crates of vegetables. In the shot of him landing on the crates, there is a brief moment where actor Mark Ruffalo has been replaced with a stunt double. (01:12:58)
Continuity mistake: When Dylan is on the boat with Walter and Tressler, there is a bloody cut on his bottom lip, but when he is rescued by the Horsemen minutes later, the bloody cut has suddenly vanished. The cut reappears when Dylan and the Horsemen are talking in the next scene. (01:15:05 - 01:22:15)
Character mistake: At the end of the first movie, when Dylan shows Alma the newspaper article about Lionel Shrike's death, there is an additional article talking about a younger Dylan with the headline "Sad Tale of His Orphaned Son" referring to Dylan, indicating that both of his parents have died. However, in this movie, when Tressler is revealed to be Walter's father, Dylan tells Tressler that Tressler Insurance denied his mother's insurance claim after Lionel Shrike's death. (01:15:50)
Continuity mistake: When Walter finds out about the Horsemen's plan to expose him on New Years Eve, Walter tells a bodyguard to get his father. The bodyguard begins to walk past Walter, but in the next shot, the bodyguard is suddenly at the other end of the room. (01:27:05)
Continuity mistake: When Walter and Tressler arrive in London, Walter gets into a car and begins to close the door. Chase is behind the car walking up to it, but when the car drives off in the next shot, he is suddenly standing beside the car, standing completely still. (01:28:45)
Continuity mistake: When Jack is performing in London, there is a woman directly in front of him, recording him on her phone. In one shot, she has her left hand across the left side of the phone and is holding it, but in the next shot, she is only holding the left side with only two fingers. (01:29:20)
Continuity mistake: When Daniel is performing in London, there is a wide angle shown in the scene, with Daniel under blue lighting. In all other shots in the scene, he is under white stage light. (01:34:10)
Other mistake: Merrit claims he has never ridden a motorcycle and talks about how unsafe it is, but is seen riding one in the first film. (01:39:30)
Answer: Walter thought the chip was real because he placed it under a scanner and the scanner confirmed that the chip was real. However, given the fact that later on it was revealed that the whole plane sequence was a set up, it is probable that the device used to scan the chip was actually a fake that was used to make Walter believe the chip was real, most likely throw him off guard.
Casual Person