Take this a little further, though. A "guide" to terrorism (or rape for that matter) exposes how the "trick" is performed and so allows others to come up with strategies to combat that act.
The question, of course, is whether or not that ups the game. Every new computer virus that comes out has to get through an ever more sophisticated set of virus scanners and so there is an evolutionary process.
But the terrorist attack of September 11 already upped that game. Surely it is helpful to know how terrorists and other nutcases plan their attacks so that we, who are not homicidal, can at least have some insight into how the other side thinks?
Gavin