Continuity mistake: In the opening 1950s school scene, the children all run up the front steps of the school. A little blonde girl wearing an orange cardigan and white dress is seen running up the stairs to the school building. A few seconds later the same girl is seen running towards the school again - from further back. (00:01:45)
Continuity mistake: When Nicholas Cage is watching Tigers under threat, he pours himself a drink. He ends up overfilling the glass, resulting in him spilling on the floor. It sounds like the scotch hits a wooden or tile floor, yet when the angle changes he would have spilled on a rug. Here the wet spot on the rug is also magically gone. (00:21:30)purumal
Continuity mistake: When John is decoding the numbers for the first time, he uses a whiteboard. On the whiteboard are, presumably, spelling words for Caleb. He erases some of these to make room for the numbers. In the various shots of this scene, words disappear and reappear continuously, often written slightly different.
Continuity mistake: Early in the film, Nicholas Cage is hitting the bottle. After pouring one or two drinks, he starts to pour another, nearly fills his glass, then spills it. Although the bottle is about half-empty at this point, the next time it is shown standing on a table, there is only a small amount remaining at the bottom.
Continuity mistake: When Ms. Thomas is showing them the time capsule, she pulls it out of a box. The box is on the floor when the capsule is put on the desk, and it is plain to see that the capsule would not have been able to fit in the box that is shown.
Continuity mistake: In the scene where there is heavy traffic on the road (before the plane crash), John gets out of his car to see what's going on. As he's making his way to the front, he passes a black pick-up truck. The camera angle changes, and you can see John pass the same truck again.