I want to assume the TSA is both intelligent and motivated to protect us. I’m taking your word for it that there is an actual threat — lots of chemists disagree — but your liquid ban isn’t mitigating it. Instead, I have the sinking feeling that you’re defending us against a terrorist smart enough to develop his own liquid explosive, yet too stupid to read the rules on TSA’s own website.
Bruce Schneier: Conversation with Kip Hawley, TSA Administrator (Part 1)