May I suggest that, entirely accidentally, all this inconsistency enhances security?
The terrorist needs to know in advance what the system is in order to spot how to defeat it. He wants a high degree of certainty in that process. If the process keeps changing, and has no consistency to it, it makes his task that much more difficult. Now of course the tidy minds haven't designed the system that way, and the chaos isn't intelligent chaos, but it's better than complete predictability, no?
Sven
Quite right Sven. But it is only by accident so lets not try to pin all our hopes on inconsistancy saving the day eh!
FWIW, it also hinders security for the same reason. E.g staff forget or fail or the process 'breaks'. E.g. staff at the gate think the airplane is checking the boarding cars whilst they think the gate is checking..
for simple example.
Have to go, 2 yo is trashing the other room