When I was coming back from an international travel recently and was browsing through the inflight entertainment shows available, "Person of Interest" series on CBS caught my eye. A computer genius develops a machine for the government which is used to detect information leading to acts of terrorism before they can be executed. "The machine" separates the information gathered into two categories: relevant and irrelevant. The scientist, however, discovered that the irrelevant information also often led to the discovery of other acts of violent crimes. With the state-of-the-art surveillance technology, the program uses pattern recognition to identify people who are about to be involved in violent crimes.