Smoke Screening
Security theater, from this perspective, is an attempt to convey a message: “We are doing everything possible to protect you.” When 9/11 shattered the public’s confidence in flying, Slovic says, the handful of anti-terror measures that actually work—hardening the cockpit door, positive baggage matching, more-effective intelligence—would not have addressed the public’s dread, because the measures can’t really be seen. Relying on them would have been the equivalent of saying, “Have confidence in Uncle Sam,” when the problem was the very loss of confidence. So a certain amount of theater made sense. Over time, though, the value of the message changes. At first the policeman in the train station reassures you. Later, the uniform sends a message: train travel is dangerous. “The show gets less effective, and sometimes it becomes counterproductive.”
Does Airport Security Really Make Us Safer? -Charles Mann
