Continuity mistake: At the beginning of the torture sequence, as Bond's face is lifted from the tub of ice water, the Korean woman leans toward him to the point where their faces are almost touching. But a fraction of a second later, as he's pushed back into the water, she's sitting back. It's too quick a change in shot for her to have simply moved - we'd have seen it.
Continuity mistake: In the scene where Bond's new car is introduced to him, Bond can't see it, even though it moves, but when Q walks past it, it distorts the image quite a lot. Further on in the film, whenever the car is invisible, it distorts the image behind it.
Continuity mistake: When Q hands Bond his new watch, he puts it on his left wrist, as the Pierce Brosnan "Bond" always has. Every scene from there after shows it on his left wrist. However, when he later removes it to use the laser emitter to cut a hole in the ice, he removes it from his right wrist. All following scenes show it again on his left wrist.
Continuity mistake: When James is first talking to Jinx after she comes out the water, her hand position changes on the glass she is drinking from.
Continuity mistake: When Bond is with Jinx at the beach in Cuba, he says to her, "It's when their prey comes out to drink." Jinx then takes the glass her from her mouth and brings it down the front of her body, but in the next shot she is drinking from the glass again.
Continuity mistake: When Bond saves Jinx from the flooded room his hair changes from wet to dry then wet again when he gets her out of the car.
Continuity mistake: Just before the hovercraft smashes through the gate, the hovercraft that was overturned in front of it disappears.
Continuity mistake: All three surfers at the start are bare footed, but once on the beach and after, they have footwear - in a supposedly continuous scene.
Continuity mistake: When Jinx takes a sip of her drink, Bond says to her, "Too strong for you?" and you can see takes the glass away from her mouth, but in the next shot she is holding the glass close to her lips.
Continuity mistake: When Bond and Graves are fencing, the amount of blood on Bond's nose increases or decreases randomly between shots, without any logical order.
Answer: By this stage, it's become a habit.
J I Cohen