Originally Posted by Bart
I'm a big believer in individual responsibility. In this day and age, especially five years in the wake of 9/11 with all of the controversial security measures, there is absolutely no excuse for not knowing what is inside your carry-on. None whatsoever.
Not knowing what's in your bag is unlikely. Not understand what is allowed and what isn't is VERY likely, given the random factors of what phase of matter the TSA is feeling like outlawing this week, how the random TSADroid chooses to view the restrictions, and how mad they are that day and feel like taking it out on the passenger.