I have long maintained that most of what I see in the area of "security," particularly as it concerns the gauntlet we all must endure each time we fly, is little more than an illusion meant to give people a sense of being safer without really effectively making them safer. In a world where beliefs and feelings often trump the reality of things, it’s an "effective" government tool.
I see it nearly everywhere.
Penn Gillette, the famous illusionist, recounts his experience in dealing with airline security.
(via Kim du Toit)