Continuity mistake: In the scene where Anderton is in flashback to the day he lost his son at the pool, the same woman (of "ample build") walks past him in a pink-ish bikini at least twice.
Continuity mistake: At the beginning of the movie the date is stated as 2054. However, when Anderton has been identified on the metro and data appears on a clear screen, the date he went missing is listed as December 12, 2055. (00:45:10)
Factual error: When they are given the Federal Agent a tour of Pre Crime in the beginning, they say that the victim ball appears on the left and the perpetrator on the right. Yet later in the movie, when Leo Crowe's murder is revealed, Anderton picks up his own ball (the perpetrator's ball) from the slot on the left. If he had wanted to pick up the correct ball, he would have grabbed the one on the right.
Continuity mistake: When John and Agatha are in Leo Crow's room, John finds the single photo of Sean and as he looks at it we see the back of the photo and the outline of the boy's image. John then finds the multiple photo-strip of Sean with Leo and holds it in front of him, but as he says, "I am going to kill this man," John is actually holding the single photo - note the outline of only Sean's image on the back of the photo. Next shot he's holding the multiple photo-strip again. (01:42:45)Super Grover
Continuity mistake: The front door of Howard Marks house has no windows on the sides and a rectangular transom window above when seen from outside. When seen from inside, however, there are side windows and the transom window is now an elongated half-circle. Also the house is magically huge inside, and not in a way that suggests a conversion of two houses into a single unit.
Continuity mistake: At the start, when John Anderton is going to arrest the man who can't see well without his glasses, he his trying to figure out which house the killer is in. While looking around, his helmet is fastened tightly around his neck, however, as he is racing off to the house he pulls the helmet off in a way which couldn't have been accomplished with the strap still fastened.
Continuity mistake: When John Anderton is fighting off the agents in the car factory, he does a backflip, and then jumps for the approaching walkway, but if you look closely at the floor, the agents feet are visible, therefore signifying they arrived a little early, and stopped. (00:50:40)The-Immortal
Audio problem: When John Anderton's wife throws John's eyeball (stored in a clear plastic bag) onto Tim Blake Nelson's pipe organ, an ongoing organ note is heard, implying that the weight of the eyeball is depressing a key or two. We then see a shot of the eyeball resting on the organ's keys, none of which are depressed. (02:01:20)
Continuity mistake: When Anderton is in the street escaping on the jet pack the shot from above shows him tilted upwards (so his body looks higher off the ground).In the following shot from in front of him he's much closer to the ground and tilted downwards.
Continuity mistake: When the Pre-crime agents break into Laras house to catch John, they barge in and surround him, when you see the man with the head piece it is fully extended at the time but when the go to place it on his head the headpiece is not extended untill the agent activates it.
Continuity mistake: When Witwer looks at the prevision with Agatha in the mirror it's not broken, but during the murder it is. The prevision was not altered until the time of the murder was altered by John's delay, so the killing was not 'a different one' until after that point, yet the borken mirror error occurs before time runs out, making it an inconsistency with prevision.Piemanmoo
Continuity mistake: When Agatha suddenly scares and grabs John Anderton in the pool, she says, "Can you see?" with her right hand over his left shoulder, but when the shot changes immediately, Agatha's hand is now under his left armpit.