Re: Nice article...
The science had been invented to allow them to establish it would happen.
There's been documentary after documentary which has clarified this.
I think the most pertinent one contains a line, I paraphrase, "We knew everything about these guys, names, dob, history, allegiances etc. What we didn't know was that they were on the US soil at the time."
The people that protect us, (and despite me never having worked for any of them, I still believe that they are there for that, despite having the view of several miscarriages of justice which were necessary for the bigger picture,) had in the previous two years asked if they could test new developments in mathematics, because they were finding it very difficult to identify IT aware nutters using conventional means.
The US senate refused permission in 1999. This was on the BBC. The US Senate was full of the same kinds of people who populate most parliaments, e.g. non scientific, ego centricists, but they did do their job of protecting civil liberties.
It was an inevitable consequence of an IT aware Al Queda, that sooner or later the senate's refusal to allow exclusion based geo-locint, would result in a catastrophe, and the whole Big Data science has been a state sponsored attempt to harness the world's brains to find nutters, in my opinion.
I will go to my grave, hopefully a long time from now, still supporting these people, despite terrible miscarriages of justice, because the cost benefit analysis shows we are better off with them, especially if they have to justify themselves.
There have been dozens of documentaries which reference the Senate's refusal to allow geo-loc analysis on nutters, largely because had they done it, they'd have found them.