My friend used this argument on me the other day, but I think it’s complete BS. The whole purpose of terrorism is to take advantage of human psychology to terrorize a population. Homo sapiens, in case you hadn’t noticed it, aren’t rational, no matter how much our silly market-based economic system seems to believe we are. So saying to your entire population of homo sapiens, irrational by nature, to be rational is just silly silly silliness. Terrorism has a nonlinear effect because it is out of our control and seemingly random and consists of horribly violent and terrible events that are horrific to even think about, though the numbers are small, but also based on a power law so there are many more large events than would be expected with a Gaussian distribution. Being mad that an effectively designed way of terrorizing your homo sapiens population is working is like getting mad at your dog for barking at strangers. Be mad at the people terrorizing them and stop them, don’t be mad that people are people.
But let’s be rational! Terrorism is a small percentage effect.