I wish, the TSA was tested and it failed to stop 95% of instances of undercover Homeland Security agents from bringing on explosives and weapons.
https://www.huffingtonpost.com/2015/06/01/tsa-fails-95-perce...
https://www.huffingtonpost.com/2015/06/01/tsa-fails-95-perce...
There is a term for what you described, security theater. I'm not saying it's worthless, but it's only not worthless because terrorists might believe it's not.