Spoiler Alert - Click to Toggle
The film includes some truly ridiculous setups which completely defy any sane logic. Take, for instance, the set piece where our hero becomes trapped in a high security, climate controlled vault during a power outage. When the power goes out, the backup batteries kick in but apparently the uninterruptible power supply doesn't power the stringently controlled air conditioning system, neither does it power the electronic lock on the door. It does, however, power a video monitor (the only thing it does power other than the moody lighting) which kindly advises how much battery life is left as you die a rapid asphyxiating death. A backup power system whose sole purpose is to run a video monitor telling you that it is on backup is a level of redundancy which defies belief. It reminds me of that button in Hitchhikers which, when pressed, lights up a sign which says, "Do Not Press This Button Again". And judging by the rate at which our hero is running out of oxygen, we can only presume that the power failure results in all the air being immediately evacuated from the room as well. Ridiculous! And this is not an isolated occurrence. Here's another couple which annoyed piss out of me:
a) it is totally inconceivable that a couple of professional scientists like Langdon and that chick would purposefully desecrate an historically significant document (i.e. tearing out a page) rather than spend 30 seconds copying a line out of it.
b) when Langdon shoots the glass wall it is clear that it is comprised of a bullet resistant laminated construct yet seconds later it miraculously transforms into toughened glass and fractures into thousands of pieces. (And if you say that such a miracle was possible because it was in the Vatican I'm going to punch you!) Of course, the fact that I have experience in the glass industry makes this plainly obvious to me.