If the terrorists are allowed small knives, so are other passengers. That puts the terrorists at risk, since before the new rule, they were the only passengers with weapons. Next step, cut back on the feel-ups at the airport. What is really needed, and everyone knows it, is profiling the potential perps. Those 80-year-old Norse women are relatively low risk....but, no, I'm sure TSA will still require old ladies to remove their diapers.