From Bruce Schneier’s “Movie Plot Threat Contest: Status Report” (Crypto-Gram Newsletter: 15 May 2006):
… you have to wonder why there have been no terrorist attacks in the U.S. since 9/11. I don’t believe the “flypaper theory” that the terrorists are all in Iraq instead of in the U.S. And despite all the ineffectual security we’ve put in place since 9/11, I’m sure we have had some successes in intelligence and investigation — and have made it harder for terrorists to operate both in the U.S. and abroad.
But mostly, I think terrorist attacks are much harder than most of us think. It’s harder to find willing recruits than we think. It’s harder to coordinate plans. It’s harder to execute those plans. Terrorism is rare, and for all we’ve heard about 9/11 changing the world, it’s still rare.