Deliberate mistake: In the chase through the tube station, Bond and Silva both slide down between the escalators. On the London Underground, this area has hard vertical signs at regular intervals, precisely to prevent people sliding down. (01:31:50)
Deliberate mistake: The VW beetles on the train are parked side-by-side. Cars are never loaded like this - they would be end-to-end to stop them overhanging the wagon and hitting passing objects. They're only positioned like that to facilitate driving the digger over them later. (00:07:40)
Deliberate mistake: When Bond walks through the tube train he leaves the doors open so the cameraman can follow him. This scene was shot several times to get the front and rear shots. When filming from the front, he closes the doors behind him. (01:30:30)
Answer: Silva's objective was not just to kill M - if it was, he could have blown up her office with her in it when he hacked into MI6 the first time. He wanted to humiliate and terrify her by showing he could get to her again and again, whatever measures were put in place to protect her.
Sierra1 ★