This is from the guy who wrote Freakonomics, a book I truly enjoyed reading. He always look at things in ways that are difficult to predict and surprising. So I picked up this post with interest, to end disappointed, there were no real revelations for me as for theory of terrorism or anything like that. I also felt uneasy about the scenario he describes, cause it's like giving ideas to the bad guys. I remember reading a tom clancy book(as pointed out in the comments), the one where the plane crashes in the senate and kills everyone but the VP, our hero, who then becomes president. Then in 2001 when seeing the planes crashing in the WTC NY - I asked myself some serious questions if a link could/should be established. Back to today again - I reread the post, and like *some* of the comments, I think it's better to know about the scenarios than not. The consequences of trying to stop people from writing/thinking about potential scenarios are unacceptable, it would be literally the wrong side winning. So I agree with the author statement:
"So by getting these ideas out in the open, it gives terror fighters a chance to consider and plan for these scenarios before they occur."
So even if it's scary we have to have the courage to talk about.