Visible crew/equipment: Just before Amanda shoots Lynn, a mini microphone can be seen on Amanda's neck. It is only visible for a few seconds then vanishes, so look quickly.
Visible crew/equipment: When Jeff is stuck to the fridge, you can see a cameraman's shadow on his shirt.
Visible crew/equipment: Just as Jeff and the judge walk out of the pig room, we see the judge walk through some plastic. When he walks through the camera is reflected on his back. (01:17:15)
Visible crew/equipment: There is one very quick shot when Lynn is asking Amanda for Ativan. In the one shot, look in the glass behind Lynn and see a boom arm. (00:37:50)
Visible crew/equipment: When Jigsaw is having a fit, there is one very quick shot after Lyne tells Amanda to back off, that a boom mic is visible above her head. (00:38:00)
Answer: Adam didn't just lose because he let the key get drowned. He had the two hacksaws and he broke his own in a hurry. And there was also the toilet lid that he could have used to smash his foot like Eric did in Saw III. Jigsaw never said that improvising or thinking outside the box was against the rules. So even if you wipe the key out of the equation, Adam still has at least two other ways to release himself from the chains.
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