There's a reason millions of people try to solve crossword puzzles each day. Amid the well-ordered combat between a puzzler's mind and the blank boxes waiting to be filled, there is satisfaction along with frustration. Even when you can't find the right answer, you know it exists. Puzzles can be solved; they have answers.
But a mystery offers no such comfort. It poses a question that has no definitive answer because the answer is contingent; it depends on a future interaction of many factors, known and unknown. A mystery
cannot be answered; it can only be framed, by identifying the critical factors and applying some sense of how they have interacted in the past and might interact in the future. A mystery is an attempt to define ambiguities.
Puzzles may be more satisfying, but the world increasingly offers us mysteries. Treating them as puzzles is like trying to solve the unsolvable—an impossible challenge. But approaching them as mysteries may make us more comfortable with the uncertainties of our age.
During the cold war, much of the job of U.S. intelligence was puzzle-solving—seeking answers to questions that had answers, even if we didn't know them. How many missiles did the Soviet Union have? Where were they located? How far could they travel? How accurate were they? It made sense to approach the military strength of the Soviet Union as a puzzle—the sum of its units and weapons, and their quality.
But the collapse of the Soviet Union and the rise of terrorism changed all that. Those events upended U.S. intelligence, to the point that its major challenge now is to frame mysteries, as I learned as vice chairman of the National Intelligence Council, managing the process for producing National Intelligence Estimates.
To analysts in the Pentagon, for instance, terrorists present the ultimate asymmetric threat. But the nature of the threat is a mystery, not a puzzle. Terrorists shape themselves to our vulnerabilities, to the seams in our defenses; the threat they pose depends on us. The 9/11 hijackers, for instance, did not come to their plan of attack because they were aviation buffs. They came to it because they had identified gaps in our aviation defenses.
Whether Saddam Hussein's Iraq had nuclear or chemical weapons seemed a quintessential puzzle, and U.S. intelligence treated it that way. And got it wrong. But suppose the issue of Iraq's weapons of mass destruction had been treated not as a puzzle but as a mystery. That might have turned the exercise away from technical details and toward Saddam's thinking. It might have raised the question: Could Saddam be more afraid of his local enemies than he is of the United States? Could that lead him to boast that he had weapons he really didn't have?
Puzzle-solving is frustrated by a lack of information. Given Washington's need to find out how many warheads Moscow's missiles carried, the United States spent billions of dollars on satellites and other data-collection systems. But puzzles are relatively stable. If a critical piece is missing one day, it usually remains valuable the next.
By contrast, mysteries often grow out of too much information. Until the 9/11 hijackers actually boarded their airplanes, their plan was a mystery, the clues to which were buried in too much "noise"—too many threat scenarios. So warnings from FBI agents in Minneapolis and Phoenix went unexplored. The hijackers were able to hide in plain sight. After the attacks, they became a puzzle: it was easy to pick up their trail.