From what I can tell the entire effort is aimed at preventing people from entering the plane with box cutters, thus forcing them to break the glass on their laptop to instantly construct a far superior weapon. Since 9/11 if a passenger gets drunk and a little out of control he is attacked and restrained by other passengers without much hesitation. IMO the TSA could hand out tiny sharp objects to everyone as they get on the plane and there will still never be another such method successfully used to highjack a plane.