The whole security issues lately couldnt have been more publicised in the press and around the majority of airports. Yet pax and crew still try to play the system.
Its perfectly simple, read the signs, know the rules, listen to the check-in staff and it saves alot of hassle before people reach the security check point.
Therefore reducing the long searches....people trying to get things through when majority of the time, they wont.... less people being sent back to check bags in.
Basically Less A***ng about! Its not difficult to be prepared, and everyone benefits in the long run.