Robert J. Gordon:
The current system of airport security all over the world represents an overreaction to the September 11, 2001, hijackings. There was only one weakness in the U.S. airline security system on September 11, and this was that the cockpit doors were flimsy. Within days, they were replaced by completely secure doors that nobody could break through. Although the security issue was completely solved within a week, fourteen years later billions of dollars per year of passenger time continues to be wasted in unnecessary additional security precautions. The pre-2001 security system, based on a quick walk through an X-ray machine to check for guns and metal weapons, would be enough.