Interesting article. I however have a beef with the thought that "“This gives you hope that terrorism is understandable from a scientific perspective.” " Furthermore, I have a problem with his thought that patterns of probability can be seen to develop over time, while not explicitly stating _when_ an attack will happen. To me, that's akin to stating that the San Andreas fault-system will trigger with a mounting probability over the years. Of course it will - as tension builds at some point it's inevitable that the fault will release. When world governments have bad foreign policy (which most seem to have at least some time, if not most of the time), of course you're going to create disenfranchised members of the world community - and when you arm and train them like Al Quaeda & Taliban were when the west wanted them to fight the Soviets they will turn on you. It's not a matter of if, but when. Stating that over time the likelihood of an attack increases seems to not scientific, but rather obvious as somebody (or some group) is almost guaranteed to slip through the security net in place to detect/predict such actions.
My $0.02