Visible crew/equipment: Just as Adam shouts "Somebody help me" right at the very start, you can see a boom shadow move over the wall. (00:01:30)
Visible crew/equipment: After the first call when Dr Gordon gets on the cell phone, a boom mike shadow is visible on the bathroom door. (00:10:00)
Visible crew/equipment: You can see the shadow of the camera on Dr. Gordon's sleeve when he is talking to Diana sitting on her bed. (00:34:20)
Visible crew/equipment: In the scene where Adam walks around his apartment with his camera (because the lights were out) the filmmakers put lights in the set so the actors wouldn't walk into walls, and also letting the audience see what's actually happening. In the movie, though, there are supposed to be no lights on at all. However, just before Adam opens the closet door with Jigsaw in it, you can see the reflection of one of the set's lights on the top of Adam's camera. (01:07:40)
Answer: Jigsaw's traps would more than likely leave a person mentally unstable, which could result in Stockholm Syndrome, a condition which involves a victim sympathising with their captor. In fact, after Lawrence Gordon escapes the bathroom after severing his own foot, Jigsaw nursed him back to full health, thus gaining his trust (this is shown in Saw VII). He also plays mind games on people, which is shown in a flashback in Saw III in which he convinced Amanda to side with him. In her unstable state of mind, she realised that he was the first person in her life she could actually relate to, and thus became an accomplice.
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