"Intelligence" is a word that conjures assorted notions of spying and espionage, secrets, and the world of covert gadgetry. Yet to some people, the word intelligence is closely associated with the Orwellian concept of "big brother"-a world of hard-ball politics and an uncompromising quest for power and influence. There is no doubt that intelligence work is associated with all these concepts. But as will be explained, intelligence in its lowest common...