CNN CNN Newsroom June 7, 2013 17:17:00
Long it lasted. that is metadata. you don't know what's being said, you just know contact was made. now, that computer could analyze all those contacts to come up with essentially networks. who was talking to whom most often? we all talk to the same people over and over again. then, along comes some kind of event in the middle of all this. a terrorist event. what investigators could do if they had a suspect in particular is go back to all of that metadata and say look at all of the activity on the phones before this happened, around the time this happened. did some groups stand out as being mu...