Dangerous Minds

Enron, search website intelligence, and the perils of too much information.

1.

On the afternoon of October 23, 2006, Jeffrey Skilling sat at a table at the front of a federal courtroom in Houston, Texas. He was wearing a navy-blue suit and a tie. He was fifty-two years old, but looked older. Huddled around him were eight lawyers from his defense team. Outside, television-satellite trucks were parked up and down the block.

“We are here this afternoon,” Judge Simeon Lake began, “for sentencing in United States of America versus Jeffrey K. Skilling, Criminal No. H-04-25.” He addressed the defendant directly: “Mr. Skilling, you may now make a statement and present any information in mitigation.”

Skilling stood up. Enron, the company he had built into an energy-trading leviathan, had collapsed into bankruptcy almost exactly five years before. In May, he had been convicted by a jury of fraud. Under a settlement agreement, almost everything he owned had been turned over to a fund to compensate former shareholders.

He spoke haltingly, stopping in mid-sentence. “In terms of remorse, Your Honor, I can’t imagine more remorse,” he said. He had “friends who have died, good men.” He was innocent—”innocent of every one of these charges.” He spoke for two or three minutes and sat down.

Judge Lake called on Anne Beliveaux, who worked as the senior administrative assistant in Enron’s tax department for eighteen years. She was one of nine people who had asked to address the sentencing hearing.

“How would you like to be facing living off of sixteen hundred dollars a month, and that is what I’m facing,” she said to Skilling. Her retirement savings had been wiped out by the Enron bankruptcy. “And, Mr. Skilling, that only is because of greed, nothing but greed. And you should be ashamed of yourself.”

The next witness said that Skilling had destroyed a good company, the third witness that Enron had been undone by the misconduct of its management; another lashed out at Skilling directly. “Mr. Skilling has proven to be a liar, a thief, and a drunk,” a woman named Dawn Powers Martin, a twenty-two-year veteran of Enron, told the court. “Mr. Skilling has cheated me and my daughter of our retirement dreams. Now it’s his time to be robbed of his freedom to walk the earth as a free man.” She turned to Skilling and said, “While you dine on Chateaubriand and champagne, my daughter and I clip grocery coupons and eat leftovers.” And on and on it went.

The Judge asked Skilling to rise.

“The evidence established that the defendant repeatedly lied to investors, including Enron’s own employees, about various aspects of Enron’s business,” the Judge said. He had no choice but to be harsh: Skilling would serve two hundred and ninety-two months in prison—twenty-four years. The man who headed a firm that Fortune ranked among the “most admired” in the world had received one of the heaviest sentences ever given to a white-collar criminal. He would leave prison an old man, if he left prison at all.

“I only have one request, Your Honor,” Daniel Petrocelli, Skilling’s lawyer, said. “If he received ten fewer months, which shouldn’t make a difference in terms of the goals of sentencing, if you do the math and you subtract fifteen per cent for good time, he then qualifies under Bureau of Prisons policies to be able to serve his time at a lower facility. Just a ten-month reduction in sentence . . .”

It was a plea for leniency. Skilling wasn’t a murderer or a rapist. He was a pillar of the Houston community, and a small adjustment in his sentence would keep him from spending the rest of his life among hardened criminals.

“No,” Judge Lake said.

2.

The national-security expert Gregory Treverton has famously made a distinction between puzzles and mysteries. Osama bin Laden’s whereabouts are a puzzle. We can’t find him because we don’t have enough information. The key to the puzzle will probably come from someone close to bin Laden, and until we can find that source bin Laden will remain at large.

The problem of what would happen in Iraq after the toppling of Saddam Hussein was, by contrast, a mystery. It wasn’t a question that had a simple, factual answer. Mysteries require judgments and the assessment of uncertainty, and the hard part is not that we have too little information but that we have too much. The C.I.A. had a position on what a post-invasion Iraq would look like, and so did the Pentagon and the State Department and Colin Powell and Dick Cheney and any number of political scientists and journalists and think-tank fellows. For that matter, so did every cabdriver in Baghdad.

The distinction is not trivial. If you consider the motivation and methods behind the attacks of September 11th to be mainly a puzzle, for instance, then the logical response is to increase the collection of intelligence, recruit more spies, add to the volume of information we have about Al Qaeda. If you consider September 11th a mystery, though, you’d have to wonder whether adding to the volume of information will only make things worse. You’d want to improve the analysis within the intelligence community; you’d want more thoughtful and skeptical people with the skills to look more closely at what we already know about Al Qaeda. You’d want to send the counterterrorism team from the C.I.A. on a golfing trip twice a month with the counterterrorism teams from the F.B.I. and the N.S.A. and the Defense Department, so they could get to know one another and compare notes.

If things go wrong with a puzzle, identifying the culprit is easy: it’s the person who withheld information. Mysteries, though, are a lot murkier: sometimes the information we’ve been given is inadequate, and sometimes we aren’t very smart about making sense of what we’ve been given, and sometimes the question itself cannot be answered. Puzzles come to satisfying conclusions. Mysteries often don’t.

If you sat through the trial of Jeffrey Skilling, you’d think that the Enron scandal was a puzzle. The company, the prosecution said, conducted shady side deals that no one quite understood. Senior executives withheld critical information from investors. Skilling, the architect of the firm’s strategy, was a liar, a thief, and a drunk. We were not told enough—the classic puzzle premise—was the central assumption of the Enron prosecution.

“This is a simple case, ladies and gentlemen,” the lead prosecutor for the Department of Justice said in his closing arguments to the jury:

Because it’s so simple, I’m probably going to end before my allotted time. It’s black-and-white. Truth and lies. The shareholders, ladies and gentlemen, . . . buy a share of stock, and for that they’re not entitled to much but they’re entitled to the truth. They’re entitled for the officers and employees of the company to put their interests ahead of their own. They’re entitled to be told what the financial condition of the company is.

They are entitled to honesty, ladies and gentlemen.

But the prosecutor was wrong. Enron wasn’t really a puzzle. It was a mystery.

3.

In late July of 2000, Jonathan Weil, a reporter at the Dallas bureau of the Wall Street Journal, got a call from someone he knew in the investment-management business. Weil wrote the stock column, called “Heard in Texas,” for the paper’s regional edition, and he had been closely following the big energy firms based in Houston—Dynegy, El Paso, and Enron. His caller had a suggestion. “He said, ‘You really ought to check out Enron and Dynegy and see where their earnings come from,’ ” Weil recalled. “So I did.”

Weil was interested in Enron’s use of what is called mark-to-market accounting, which is a technique used by companies that engage in complicated financial trading. Suppose, for instance, that you are an energy company and you enter into a hundred-million-dollar contract with the state of California to deliver a billion kilowatt hours of electricity in 2016. How much is that contract worth? You aren’t going to get paid for another ten years, and you aren’t going to know until then whether you’ll show a profit on the deal or a loss. Nonetheless, that hundred-million-dollar promise clearly matters to your bottom line. If electricity steadily drops in price over the next several years, the contract is going to become a hugely valuable asset. But if electricity starts to get more expensive as 2016 approaches, you could be out tens of millions of dollars. With mark-to-market accounting, you estimate how much revenue the deal is going to bring in and put that number in your books at the moment you sign the contract. If, down the line, the estimate changes, you adjust the balance sheet accordingly.

When a company using mark-to-market accounting says it has made a profit of ten million dollars on revenues of a hundred million, then, it could mean one of two things. The company may actually have a hundred million dollars in its bank accounts, of which ten million will remain after it has paid its bills. Or it may be guessing that it will make ten million dollars on a deal where money may not actually change hands for years. Weil’s source wanted him to see how much of the money Enron said it was making was “real.”

Weil got copies of the firm’s annual reports and quarterly filings and began comparing the income statements and the cash-flow statements. “It took me a while to figure out everything I needed to,” Weil said. “It probably took a good month or so. There was a lot of noise in the financial statements, and to zero in on this particular issue you needed to cut through a lot of that.” Weil spoke to Thomas Linsmeier, then an accounting professor at Michigan State, and they talked about how some finance companies in the nineteen-nineties had used mark-to-market accounting on subprime loans—that is, loans made to higher-credit-risk consumers—and when the economy declined and consumers defaulted or paid off their loans more quickly than expected, the lenders suddenly realized that their estimates of how much money they were going to make were far too generous. Weil spoke to someone at the Financial Accounting Standards Board, to an analyst at the Moody’s investment-rating agency, and to a dozen or so others. Then he went back to Enron’s financial statements. His conclusions were sobering. In the second quarter of 2000, $747 million of the money Enron said it had made was “unrealized”—that is, it was money that executives thought they were going to make at some point in the future. If you took that imaginary money away, Enron had shown a significant loss in the second quarter. This was one of the most admired companies in the United States, a firm that was then valued by the stock market as the seventh-largest corporation in the country, and there was practically no cash coming into its coffers.

Weil’s story ran in the Journal on September 20, 2000. A few days later, it was read by a Wall Street financier named James Chanos. Chanos is a short-seller—an investor who tries to make money by betting that a company’s stock will fall. “It pricked up my ears,” Chanos said. “I read the 10-K and the 10-Q that first weekend,” he went on, referring to the financial statements that public companies are required to file with federal regulators. “I went through it pretty quickly. I flagged right away the stuff that was questionable. I circled it. That was the first run-through. Then I flagged the pages and read the stuff I didn’t understand, and reread it two or three times. I remember I spent a couple hours on it.” Enron’s profit margins and its return on equity were plunging, Chanos saw. Cash flow—the life blood of any business—had slowed to a trickle, and the company’s rate of return was less than its cost of capital: it was as if you had borrowed money from the bank at nine-per-cent interest and invested it in a savings bond that paid you seven-per-cent interest. “They were basically liquidating themselves,” Chanos said.

In November of that year, Chanos began shorting Enron stock. Over the next few months, he spread the word that he thought the company was in trouble. He tipped off a reporter for Fortune, Bethany McLean. She read the same reports that Chanos and Weil had, and came to the same conclusion. Her story, under the headline “IS ENRON OVERPRICED?,” ran in March of 2001. More and more journalists and analysts began taking a closer look at Enron, and the stock began to fall. In August, Skilling resigned. Enron’s credit rating was downgraded. Banks became reluctant to lend Enron the money it needed to make its trades. By December, the company had filed for bankruptcy.

Enron’s downfall has been documented so extensively that it is easy to overlook how peculiar it was. Compare Enron, for instance, with Watergate, the prototypical scandal of the nineteen-seventies. To expose the White House coverup, Bob Woodward and Carl Bernstein used a source—Deep Throat—who had access to many secrets, and whose identity had to be concealed. He warned Woodward and Bernstein that their phones might be tapped. When Woodward wanted to meet with Deep Throat, he would move a flower pot with a red flag in it to the back of his apartment balcony. That evening, he would leave by the back stairs, take multiple taxis to make sure he wasn’t being followed, and meet his source in an underground parking garage at 2 A.M. Here, from “All the President’s Men,” is Woodward’s climactic encounter with Deep Throat:

“Okay,” he said softly. “This is very serious. You can safely say that fifty people worked for the White House and CRP to play games and spy and sabotage and gather intelligence. Some of it is beyond belief, kicking at the opposition in every imaginable way.”

Deep Throat nodded confirmation as Woodward ran down items on a list of tactics that he and Bernstein had heard were used against the political opposition: bugging, following people, false press leaks, fake letters, cancelling campaign rallies, investigating campaign workers’ private lives, planting spies, stealing documents, planting provocateurs in political demonstrations.

“It’s all in the files,” Deep Throat said. “Justice and the Bureau know about it, even though it wasn’t followed up.”

Woodward was stunned. Fifty people directed by the White House and CRP to destroy the opposition, no holds barred?

Deep Throat nodded.

The White House had been willing to subvert—was that the right word?—the whole electoral process? Had actually gone ahead and tried to do it?

Another nod. Deep Throat looked queasy.

And hired fifty agents to do it?

“You can safely say more than fifty,” Deep Throat said. Then he turned, walked up the ramp and out. It was nearly 6:00 a.m.

Watergate was a classic puzzle: Woodward and Bernstein were searching for a buried secret, and Deep Throat was their guide.

Did Jonathan Weil have a Deep Throat? Not really. He had a friend in the investment-management business with some suspicions about energy-trading companies like Enron, but the friend wasn’t an insider. Nor did Weil’s source direct him to files detailing the clandestine activities of the company. He just told Weil to read a series of public documents that had been prepared and distributed by Enron itself. Woodward met with his secret source in an underground parking garage in the hours before dawn. Weil called up an accounting expert at Michigan State.

When Weil had finished his reporting, he called Enron for comment. “They had their chief accounting officer and six or seven people fly up to Dallas,” Weil says. They met in a conference room at the Journal’s offices. The Enron officials acknowledged that the money they said they earned was virtually all money that they hoped to earn. Weil and the Enron officials then had a long conversation about how certain Enron was about its estimates of future earnings. “They were telling me how brilliant the people who put together their mathematical models were,” Weil says. “These were M.I.T. Ph.D.s. I said, ‘Were your mathematical models last year telling you that the California electricity markets would be going berserk this year? No? Why not?’ They said, ‘Well, this is one of those crazy events.’ It was late September, 2000, so I said, ‘Who do you think is going to win? Bush or Gore?’ They said, ‘We don’t know.’ I said, ‘Don’t you think it will make a difference to the market whether you have an environmentalist Democrat in the White House or a Texas oil man?” It was all very civil. “There was no dispute about the numbers,” Weil went on. “There was only a difference in how you should interpret them.”

Of all the moments in the Enron unravelling, this meeting is surely the strangest. The prosecutor in the Enron case told the jury to send Jeffrey Skilling to prison because Enron had hidden the truth: You’re “entitled to be told what the financial condition of the company is,” the prosecutor had said. But what truth was Enron hiding here? Everything Weil learned for his Enron exposé came from Enron, and when he wanted to confirm his numbers the company’s executives got on a plane and sat down with him in a conference room in Dallas.

Nixon never went to see Woodward and Bernstein at the Washington Post. He hid in the White House.

4.

The second, and perhaps more consequential, problem with Enron’s accounting was its heavy reliance on what are called special-purpose entities, or S.P.E.s.

An S.P.E. works something like this. Your company isn’t doing well; sales are down and you are heavily in debt. If you go to a bank to borrow a hundred million dollars, it will probably charge you an extremely high interest rate, if it agrees to lend to you at all. But you’ve got a bundle of oil leases that over the next four or five years are almost certain to bring in a hundred million dollars. So you hand them over to a partnership—the S.P.E.—that you have set up with some outside investors. The bank then lends a hundred million dollars to the partnership, and the partnership gives the money to you. That bit of financial maneuvering makes a big difference. This kind of transaction did not (at the time) have to be reported in the company’s balance sheet. So a company could raise capital without increasing its indebtedness. And because the bank is almost certain the leases will generate enough money to pay off the loan, it’s willing to lend its money at a much lower interest rate. S.P.E.s have become commonplace in corporate America.

Enron introduced all kinds of twists into the S.P.E. game. It didn’t always put blue-chip assets into the partnerships—like oil leases that would reliably generate income. It sometimes sold off less than sterling assets. Nor did it always sell those assets to outsiders, who presumably would raise questions about the value of what they were buying. Enron had its own executives manage these partnerships. And the company would make the deals work—that is, get the partnerships and the banks to play along—by guaranteeing that, if whatever they had to sell declined in value, Enron would make up the difference with its own stock. In other words, Enron didn’t sell parts of itself to an outside entity; it effectively sold parts of itself to itself—a strategy that was not only legally questionable but extraordinarily risky. It was Enron’s tangle of financial obligations to the S.P.E.s that ended up triggering the collapse.

When the prosecution in the Skilling case argued that the company had misled its investors, they were referring, in part, to these S.P.E.s. Enron’s management, the argument went, had an obligation to reveal the extent to which it had staked its financial livelihood on these shadowy side deals. As the Powers Committee, a panel charged with investigating Enron’s demise, noted, the company “failed to achieve a fundamental objective: they did not communicate the essence of the transactions in a sufficiently clear fashion to enable a reader of [Enron’s] financial statements to understand what was going on.” In short, we weren’t told enough.

Here again, though, the lessons of the Enron case aren’t nearly so straightforward. The public became aware of the nature of these S.P.E.s through the reporting of several of Weil’s colleagues at the Wall Street Journal—principally John Emshwiller and Rebecca —starting in the late summer of 2001. And how was Emshwiller tipped off to Enron’s problems? The same way Jonathan Weil and Jim Chanos were: he read what Enron had reported in its own public filings. Here is the description of Emshwiller’s epiphany, as described in Kurt Eichenwald’s “Conspiracy of Fools,” the definitive history of the Enron debacle. (Note the verb “scrounged,” which Eichenwald uses to describe how Emshwiller found the relevant Enron documents. What he means by that is “downloaded.”)

It was section eight, called “Related Party Transactions,” that got John Emshwiller’s juices flowing.

After being assigned to follow the Skilling resignation, Emshwiller had put in a request for an interview, then scrounged up a copy of Enron’s most recent SEC filing in search of any nuggets.

What he found startled him. Words about some partnerships run by an unidentified “senior officer.” Arcane stuff, maybe, but the numbers were huge. Enron reported more than $240 million in revenues in the first six months of the year from its dealings with them.

Enron’s S.P.E.s were, by any measure, evidence of extraordinary recklessness and incompetence. But you can’t blame Enron for covering up the existence of its side deals. It didn’t; it disclosed them. The argument against the company, then, is more accurately that it didn’t tell its investors enough about its S.P.E.s. But what is enough? Enron had some three thousand S.P.E.s, and the paperwork for each one probably ran in excess of a thousand pages. It scarcely would have helped investors if Enron had made all three million pages public. What about an edited version of each deal? Steven Schwarcz, a professor at Duke Law School, recently examined a random sample of twenty S.P.E. disclosure statements from various corporations—that is, summaries of the deals put together for interested parties—and found that on average they ran to forty single-spaced pages. So a summary of Enron’s S.P.E.s would have come to a hundred and twenty thousand single-spaced pages. What about a summary of all those summaries? That’s what the bankruptcy examiner in the Enron case put together, and it took up a thousand pages. Well, then, what about a summary of the summary of the summaries? That’s what the Powers Committee put together. The committee looked only at the “substance of the most significant transactions,” and its accounting still ran to two hundred numbingly complicated pages and, as Schwarcz points out, that was “with the benefit of hindsight and with the assistance of some of the finest legal talent in the nation.”

A puzzle grows simpler with the addition of each new piece of information: if I tell you that Osama bin Laden is hiding in Peshawar, I make the problem of finding him an order of magnitude easier, and if I add that he’s hiding in a neighborhood in the northwest corner of the city, the problem becomes simpler still. But here the rules seem different. According to the Powers report, many on Enron’s board of directors failed to understand “the economic rationale, the consequences, and the risks” of their company’s S.P.E. deals—and the directors sat in meetings where those deals were discussed in detail. In “Conspiracy of Fools,” Eichenwald convincingly argues that Andrew Fastow, Enron’s chief financial officer, didn’t understand the full economic implications of the deals, either, and he was the one who put them together.

“These were very, very sophisticated, complex transactions,” says Anthony Catanach, who teaches accounting at the Villanova University School of Business and has written extensively on the Enron case. Referring to Enron’s accounting firm, he said, “I’m not even sure any of Arthur Andersen’s field staff at Enron would have been able to understand them, even if it was all in front of them. This is senior-management-type stuff. I spent two months looking at the Powers report, just diagramming it. These deals were really convoluted.”

Enron’s S.P.E.s, it should be noted, would have been this hard to understand even if they were standard issue. S.P.E.s are by nature difficult. A company creates an S.P.E. because it wants to reassure banks about the risks of making a loan. To provide that reassurance, the company gives its lenders and partners very detailed information about a specific portion of its business. And the more certainty a company creates for the lender—the more guarantees and safeguards and explanations it writes into the deal—the less comprehensible the transaction becomes to outsiders. Schwarcz writes that Enron’s disclosure was “necessarily imperfect.” You can try to make financial transactions understandable by simplifying them, in which case you run the risk of smoothing over some of their potential risks, or you can try to disclose every potential pitfall, in which case you’ll make the disclosure so unwieldy that no one will be able to understand it. To Schwarcz, all Enron proves is that in an age of increasing financial complexity the “disclosure paradigm”—the idea that the more a company tells us about its business, the better off we are—has become an anachronism.

5.

During the summer of 1943, Nazi propaganda broadcasts boasted that the German military had developed a devastating “super weapon.” Immediately, the Allied intelligence services went to work. Spies confirmed that the Germans had built a secret weapons factory. Aerial photographs taken over northern France showed a strange new concrete installation pointed in the direction of England. The Allies were worried. Bombing missions were sent to try to disrupt the mysterious operation, and plans were drawn up to deal with the prospect of devastating new attacks on English cities. Nobody was sure, though, whether the weapon was real. There seemed to be weapons factories there, but it wasn’t evident what was happening inside them. And there was a launching pad in northern France, but it might have been just a decoy, designed to distract the Allies from bombing real targets. The German secret weapon was a puzzle, and the Allies didn’t have enough information to solve it. There was another way to think about the problem, though, which ultimately proved far more useful: treat the German secret weapon as a mystery.

The mystery-solvers of the Second World War were small groups of analysts whose job was to listen to the overseas and domestic propaganda broadcasts of Japan and Germany. The British outfit had been around since shortly before the First World War and was run by the BBC. The American operation was known as the Screwball Division, the historian Stephen Mercado writes, and in the early nineteen-forties had been housed in a nondescript office building on K Street, in Washington. The analysts listened to the same speeches that anyone with a shortwave radio could listen to. They simply sat at their desks with headphones on, working their way through hours and hours of Nazi broadcasts. Then they tried to figure out how what the Nazis said publicly—about, for instance, the possibility of a renewed offensive against Russia—revealed what they felt about, say, invading Russia. One journalist at the time described the propaganda analysts as “the greatest collection of individualists, international rolling stones, and slightly batty geniuses ever gathered together in one organization.” And they had very definite thoughts about the Nazis’ secret weapon.

The German leadership, first of all, was boasting about the secret weapon in domestic broadcasts. That was important. Propaganda was supposed to boost morale. If the Nazi leadership said things that turned out to be misleading, its credibility would fall. When German U-boats started running into increasingly effective Allied resistance in the spring of 1943, for example, Joseph Goebbels, the Nazi minister of propaganda, tacitly acknowledged the bad news, switching his emphasis from trumpeting recent victories to predicting long-term success, and blaming the weather for hampering U-boat operations. Up to that point, Goebbels had never lied to his own people about that sort of news. So if he said that Germany had a devastating secret weapon it meant, in all likelihood, that Germany had a devastating secret weapon.

Starting from that premise, the analysts then mined the Nazis’ public pronouncements for more insights. It was, they concluded, “beyond reasonable doubt” that as of November, 1943, the weapon existed, that it was of an entirely new type, that it could not be easily countered, that it would produce striking results, and that it would shock the civilian population upon whom it would be used. It was, furthermore, “highly probable” that the Germans were past the experimental stage as of May of 1943, and that something had happened in August of that year that significantly delayed deployment. The analysts based this inference, in part, on the fact that, in August, the Nazis abruptly stopped mentioning their secret weapon for ten days, and that when they started again their threats took on a new, less certain, tone. Finally, it could be tentatively estimated that the weapon would be ready between the middle of January and the middle of April, with a month’s margin of error on either side. That inference, in part, came from Nazi propaganda in late 1943, which suddenly became more serious and specific in tone, and it seemed unlikely that Goebbels would raise hopes in this way if he couldn’t deliver within a few months. The secret weapon was the Nazis’ fabled V-1 rocket, and virtually every one of the propaganda analysts’ predictions turned out to be true.

The political scientist Alexander George described the sequence of V-1 rocket inferences in his 1959 book “Propaganda Analysis,” and the striking thing about his account is how contemporary it seems. The spies were fighting a nineteenth-century war. The analysts belonged to our age, and the lesson of their triumph is that the complex, uncertain issues that the modern world throws at us require the mystery paradigm.

Diagnosing prostate cancer used to be a puzzle, for example: the doctor would do a rectal exam and feel for a lumpy tumor on the surface of the patient’s prostate. These days, though, we don’t wait for patients to develop the symptoms of prostate cancer. Doctors now regularly test middle-aged men for elevated levels of PSA, a substance associated with prostate changes, and, if the results look problematic, they use ultrasound imaging to take a picture of the prostate. Then they perform a biopsy, removing tiny slices of the gland and examining the extracted tissue under a microscope. Much of that flood of information, however, is inconclusive: elevated levels of PSA don’t always mean that you have cancer, and normal levels of PSA don’t always mean that you don’t—and, in any case, there’s debate about what constitutes a “normal” PSA level. Nor is the biopsy definitive: because what a pathologist is looking for is early evidence of cancer—and in many cases merely something that might one day turn into cancer—two equally skilled pathologists can easily look at the same sample and disagree about whether there is any cancer present. Even if they do agree, they may disagree about the benefits of treatment, given that most prostate cancers grow so slowly that they never cause problems. The urologist is now charged with the task of making sense of a maze of unreliable and conflicting claims. He is no longer confirming the presence of a malignancy. He’s predicting it, and the certainties of his predecessors have been replaced with outcomes that can only be said to be “highly probable” or “tentatively estimated.” What medical progress has meant for prostate cancer—and, as the physician H. Gilbert Welch argues in his book “Should I Be Tested for Cancer?,” for virtually every other cancer as well—is the transformation of diagnosis from a puzzle to a mystery.

That same transformation is happening in the intelligence world as well. During the Cold War, the broad context of our relationship with the Soviet bloc was stable and predictable. What we didn’t know was details. As Gregory Treverton, who was a former vice-chair of the National Intelligence Council, writes in his book “Reshaping National Intelligence for an Age of Information:”

Then the pressing questions that preoccupied intelligence were puzzles, ones that could, in principle, have been answered definitively if only the information had been available: How big was the Soviet economy? How many missiles did the Soviet Union have? Had it launched a “bolt from the blue” attack? These puzzles were intelligence’s stock-in-trade during the Cold War.

With the collapse of the Eastern bloc, Treverton and others have argued that the situation facing the intelligence community has turned upside down. Now most of the world is open, not closed. Intelligence officers aren’t dependent on scraps from spies. They are inundated with information. Solving puzzles remains critical: we still want to know precisely where Osama bin Laden is hiding, where North Korea’s nuclear-weapons facilities are situated. But mysteries increasingly take center stage. The stable and predictable divisions of East and West have been shattered. Now the task of the intelligence analyst is to help policymakers navigate the disorder. Several years ago, Admiral Bobby R. Inman was asked by a congressional commission what changes he thought would strengthen America’s intelligence system. Inman used to head the National Security Agency, the nation’s premier puzzle-solving authority, and was once the deputy director of the C.I.A. He was the embodiment of the Cold War intelligence structure. His answer: revive the State Department, the one part of the U.S. foreign-policy establishment that isn’t considered to be in the intelligence business at all. In a post-Cold War world of “openly available information,” Inman said, “what you need are observers with language ability, with understanding of the religions, cultures of the countries they’re observing.” Inman thought we needed fewer spies and more slightly batty geniuses.

6.

Enron revealed that the financial community needs to make the same transition. “In order for an economy to have an adequate system of financial reporting, it is not enough that companies make disclosures of financial information,” the Yale law professor Jonathan Macey wrote in a landmark law-review article that encouraged many to rethink the Enron case. “In addition, it is vital that there be a set of financial intermediaries, who are at least as competent and sophisticated at receiving, processing, and interpreting financial information . . . as the companies are at delivering it.” Puzzles are “transmitter-dependent”; they turn on what we are told. Mysteries are “receiver dependent”; they turn on the skills of the listener, and Macey argues that, as Enron’s business practices grew more com-plicated, it was Wall Street’s responsibility to keep pace.

Victor Fleischer, who teaches at the University of Colorado Law School, points out that one of the critical clues about Enron’s condition lay in the fact that it paid no income tax in four of its last five years. Enron’s use of mark-to-market accounting and S.P.E.s was an accounting game that made the company look as though it were earning far more money than it was. But the I.R.S. doesn’t accept mark-to-market accounting; you pay tax on income when you actually receive that income. And, from the I.R.S.’s perspective, all of Enron’s fantastically complex maneuvering around its S.P.E.s was, as Fleischer puts it, “a non-event”: until the partnership actually sells the asset—and makes either a profit or a loss—an S.P.E. is just an accounting fiction. Enron wasn’t paying any taxes because, in the eyes of the I.R.S., Enron wasn’t making any money.

If you looked at Enron from the perspective of the tax code, that is, you would have seen a very different picture of the company than if you had looked through the more traditional lens of the accounting profession. But in order to do that you would have to be trained in the tax code and be familiar with its particular conventions and intricacies, and know what questions to ask. “The fact of the gap between [Enron’s] accounting income and taxable income was easily observed,” Fleischer notes, but not the source of the gap. “The tax code requires special training.”

Woodward and Bernstein didn’t have any special training. They were in their twenties at the time of Watergate. In “All the President’s Men,” they even joke about their inexperience: Woodward’s expertise was mainly in office politics; Bernstein was a college dropout. But it hardly mattered, because coverups, whistle-blowers, secret tapes, and exposés—the principal elements of the puzzle—all require the application of energy and persistence, which are the virtues of youth. Mysteries demand experience and insight. Woodward and Bernstein would never have broken the Enron story.

“There have been scandals in corporate history where people are really making stuff up, but this wasn’t a criminal enterprise of that kind,” Macey says. “Enron was vanishingly close, in my view, to having complied with the accounting rules. They were going over the edge, just a little bit. And this kind of financial fraud—where people are simply stretching the truth—falls into the area that analysts and short-sellers are supposed to ferret out. The truth wasn’t hidden. But you’d have to look at their financial statements, and you would have to say to yourself, What’s that about? It’s almost as if they were saying, ‘We’re doing some really sleazy stuff in footnote 42, and if you want to know more about it ask us.’ And that’s the thing. Nobody did.”

Alexander George, in his history of propaganda analysis, looked at hundreds of the inferences drawn by the American analysts about the Nazis, and concluded that an astonishing eighty-one per cent of them were accurate. George’s account, however, spends almost as much time on the propaganda analysts’ failures as on their successes. It was the British, for example, who did the best work on the V-1 rocket problem. They systematically tracked the “occurrence and volume” of Nazi reprisal threats, which is how they were able to pinpoint things like the setback suffered by the V-1 program in August of 1943 (it turned out that Allied bombs had caused serious damage) and the date of the Nazi V-1 rocket launch. K Street’s analysis was lacklustre in comparison. George writes that the Americans “did not develop analytical techniques and hypotheses of sufficient refinement,” relying instead on “impressionistic” analysis. George was himself one of the slightly batty geniuses of K Street, and, of course, he could easily have excused his former colleagues. They never left their desks, after all. All they had to deal with was propaganda, and their big source was Goebbels, who was a liar, a thief, and a drunk. But that is puzzle thinking. In the case of puzzles, we put the offending target, the C.E.O., in jail for twenty-four years and assume that our work is done. Mysteries require that we revisit our list of culprits and be willing to spread the blame a little more broadly. Because if you can’t find the truth in a —even a mystery shrouded in propaganda—it’s not just the fault of the propagandist. It’s your fault as well.

7.

In the spring of 1998, Macey notes, a group of six students at Cornell University’s business school decided to do their term project on Enron. “It was for an advanced financial-statement-analysis class taught by a guy at Cornell called Charles Lee, who is pretty famous in financial circles,” one member of the group, Jay Krueger, recalls. In the first part of the semester, Lee had led his students through a series of intensive case studies, teaching them techniques and sophisticated tools to make sense of the vast amounts of information that companies disclose in their annual reports and S.E.C. filings. Then the students picked a company and went off on their own. “One of the second-years had a summer-internship interview with Enron, and he was very interested in the energy sector,” Krueger went on. “So he said, ‘Let’s do them.’ It was about a six-week project, half a semester. Lots of group meetings. It was a ratio analysis, which is pretty standard business-school fare. You know, take fifty different financial ratios, then lay that on top of every piece of information you could find out about the company, the businesses, how their performance compared to other competitors.”

The people in the group reviewed Enron’s accounting practices as best they could. They analyzed each of Enron’s businesses, in succession. They used statistical tools, designed to find telltale patterns in the company’s fi-nancial performance—the Beneish model, the Lev and Thiagarajan indicators, the Edwards-Bell-Ohlsen analysis—and made their way through pages and pages of footnotes. “We really had a lot of questions about what was going on with their business model,” Krueger said. The students’ conclusions were straightforward. Enron was pursuing a far riskier strategy than its competitors. There were clear signs that “Enron may be manipulating its earnings.” The stock was then at forty-eight —at its peak, two years later, it was almost double that—but the students found it over-valued. The report was posted on the Web site of the Cornell University business school, where it has been, ever since, for anyone who cared to read twenty-three pages of analysis. The students’ recommendation was on the first page, in boldfaced type: “Sell.”
Criminal profiling made easy.

1.

On November 16, patient 1940, workers at the Consolidated Edison building on West Sixty-fourth Street in Manhattan found a homemade pipe bomb on a windowsill. Attached was a note: “Con Edison crooks, this is for you.” In September of 1941, a second bomb was found, on Nineteenth Street, just a few blocks from Con Edison’s headquarters, near Union Square. It had been left in the street, wrapped in a sock. A few months later, the New York police received a letter promising to “bring the Con Edison to justice—they will pay for their dastardly deeds.” Sixteen other letters followed, between 1941 and 1946, all written in block letters, many repeating the phrase “dastardly deeds” and all signed with the initials “F.P.” In March of 1950, a third bomb—larger and more powerful than the others—was found on the lower level of Grand Central Terminal. The next was left in a phone booth at the New York Public Library. It exploded, as did one placed in a phone booth in Grand Central. In 1954, the Mad Bomber—as he came to be known—struck four times, once in Radio City Music Hall, sending shrapnel throughout the audience. In 1955, he struck six times. The city was in an uproar. The police were getting nowhere. Late in 1956, in desperation, Inspector Howard Finney, of the New York City Police Department’s crime laboratory, and two plainclothesmen paid a visit to a psychiatrist by the name of James Brussel.

Brussel was a Freudian. He lived on Twelfth Street, in the West Village, and smoked a pipe. In Mexico, early in his career, he had done counter-espionage work for the F.B.I. He wrote many books, including “Instant Shrink: How to Become an Expert Psychiatrist in Ten Easy Lessons.” Finney put a stack of documents on Brussel’s desk: photographs of unexploded bombs, pictures of devastation, photostats of F.P.’s neatly lettered missives. “I didn’t miss the look in the two plainclothesmen’s eyes,” Brussel writes in his memoir, “Casebook of a Crime Psychiatrist.” “I’d seen that look before, most often in the Army, on the faces of hard, old-line, field-grade officers who were sure this newfangled psychiatry business was all nonsense.”

He began to leaf through the case materials. For sixteen years, F.P. had been fixated on the notion that Con Ed had done him some terrible injustice. Clearly, he was clinically paranoid. But paranoia takes some time to develop. F.P. had been bombing since 1940, which suggested that he was now middle-aged. Brussel looked closely at the precise lettering of F.P.’s notes to the police. This was an orderly man. He would be cautious. His work record would be exemplary. Further, the language suggested some degree of education. But there was a stilted quality to the word choice and the phrasing. Con Edison was often referred to as “the Con Edison.” And who still used the expression “dastardly deeds”? F.P. seemed to be foreign-born. Brussel looked closer at the letters, and noticed that all the letters were perfect block capitals, except the “W”s. They were misshapen, like two “U”s. To Brussel’s eye, those “W”s looked like a pair of breasts. He flipped to the crime-scene descriptions. When F.P. planted his bombs in movie theatres, he would slit the underside of the seat with a knife and stuff his explosives into the upholstery. Didn’t that seem like a symbolic act of penetrating a woman, or castrating a man—or perhaps both? F.P. had probably never progressed beyond the Oedipal stage. He was unmarried, a loner. Living with a mother figure. Brussel made another leap. F.P. was a Slav. Just as the use of a garrote would have suggested someone of Mediterranean extraction, the bomb-knife combination struck him as Eastern European. Some of the letters had been posted from Westchester County, but F.P. wouldn’t have mailed the letters from his home town. Still, a number of cities in southeastern Connecticut had a large Slavic population. And didn’t you have to pass through Westchester to get to the city from Connecticut?

Brussel waited a moment, and then, in a scene that has become legendary among criminal profilers, he made a prediction:

“One more thing.” I closed my eyes because I didn’t want to see their reaction. I saw the Bomber: impeccably neat, absolutely proper. A man who would avoid the newer styles of clothing until long custom had made them conservative. I saw him clearly—much more clearly than the facts really warranted. I knew I was letting my imagination get the better of me, but I couldn’t help it.
“One more ” I said, my eyes closed tight. “When you catch him—and I have no doubt you will—he’ll be wearing a double-breasted suit.”
“Jesus!” one of the detectives whispered.
“And it will be buttoned,” I said. I opened my eyes. Finney and his men were looking at each other.
“A double-breasted suit,” said the Inspector.
“Yes.”
“Buttoned.”
“Yes.”
He nodded. Without another word, they left.

A month later, George Metesky was arrested by police in connection with the New York City bombings. His name had been changed from Milauskas. He lived in Waterbury, Connecticut, with his two older sisters. He was unmarried. He was unfailingly neat. He attended Mass regularly. He had been employed by Con Edison from 1929 to 1931, and claimed to have been injured on the job. When he opened the door to the police officers, he said, “I know why you fellows are here. You think I’m the Mad Bomber.” It was midnight, and he was in his pajamas. The police asked that he get dressed. When he returned, his hair was combed into a pompadour and his shoes were newly shined. He was also wearing a double-breasted suit—buttoned.

2.

In a new book, “Inside the Mind of BTK,” the eminent F.B.I. criminal profiler John Douglas tells the story of a serial killer who stalked the streets of Wichita, Kansas, in the nineteen-seventies and eighties. Douglas was the model for Agent Jack Crawford in “The Silence of the Lambs.” He was the protégé of the pioneering F.B.I. profiler Howard Teten, who helped establish the bureau’s Behavioral Science Unit, at Quantico, in 1972, and who was a protégé of Brussel—which, in the close-knit fraternity of profilers, is like being analyzed by the analyst who was analyzed by Freud. To Douglas, Brussel was the father of criminal profiling, and, in both style and logic, “Inside the Mind of BTK” pays homage to “Casebook of a Crime Psychiatrist” at every turn.

“BTK” stood for “Bind, Torture, Kill”—the three words that the killer used to identify himself in his taunting notes to the Wichita police. He had struck first in January, 1974, when he killed thirty-eight-year-old Joseph Otero in his home, along with his wife, Julie, their son, Joey, and their eleven-year-old daughter, who was found hanging from a water pipe in the basement with semen on her leg. The following April, he stabbed a twenty-four-year-old woman. In March, 1977, he bound and strangled another young woman, and over the next few years he committed at least four more murders. The city of Wichita was in an uproar. The police were getting nowhere. In 1984, in desperation, two police detectives from Wichita paid a visit to Quantico.

The meeting, Douglas writes, was held in a first-floor conference room of the F.B.I.’s forensic-science building. He was then nearly a decade into his career at the Behavioral Science Unit. His first two best-sellers, “Mindhunter: Inside the FBI’s Elite Serial Crime Unit,” and “Obsession: The FBI’s Legendary Profiler Probes the Psyches of Killers, Rapists, and Stalkers and Their Victims and Tells How to Fight Back,” were still in the future. Working a hundred and fifty cases a year, he was on the road constantly, but BTK was never far from his thoughts. “Some nights I’d lie awake asking myself, ‘Who the hell is this BTK?’ ” he writes. “What makes a guy like this do what he does? What makes him tick?”

Roy Hazelwood sat next to Douglas. A lean chain-smoker, Hazelwood specialized in sex crimes, and went on to write the best-sellers “Dark Dreams” and “The Evil That Men Do.” Beside Hazelwood was an ex-Air Force pilot named Ron Walker. Walker, Douglas writes, was “whip smart” and an “exceptionally quick study.” The three bureau men and the two detectives sat around a massive oak table. “The objective of our session was to keep moving forward until we ran out of juice,” Douglas writes. They would rely on the typology developed by their colleague Robert Ressler, himself the author of the true-crime best-sellers “Whoever Fights Monsters” and “I Have Lived in the Monster.” The goal was to paint a picture of the killer—of what sort of man BTK was, and what he did, and where he worked, and what he was like—and with that scene “Inside the Mind of BTK” begins.

We are now so familiar with crime stories told through the eyes of the profiler that it is easy to lose sight of how audacious the genre is. The traditional detective story begins with the body and centers on the detective’s search for the culprit. Leads are pursued. A net is cast, widening to encompass a bewilderingly diverse pool of suspects: the butler, the spurned lover, the embittered nephew, the shadowy European. That’s a Whodunit. In the profiling genre, the net is narrowed. The crime scene doesn’t initiate our search for the killer. It defines the killer for us. The profiler sifts through the case materials, looks off into the distance, and knows. “Generally, a psychiatrist can study a man and make a few reasonable predictions about what the man may do in the future—how he will react to such-and-such a stimulus, how he will behave in such-and-such a situation,” Brussel writes. “What I have done is reverse the terms of the prophecy. By studying a ‘s deeds, I have deduced what kind of man he might be.” Look for a middle-aged Slav in a double-breasted suit. Profiling stories aren’t Whodunits; they’re Hedunits.

In the Hedunit, the profiler does not catch the criminal. That’s for local law enforcement. He takes the meeting. Often, he doesn’t write down his predictions. It’s up to the visiting police officers to take notes. He does not feel the need to involve himself in the subsequent investigation, or even, it turns out, to justify his predictions. Once, Douglas tells us, he drove down to the local police station and offered his services in the case of an elderly woman who had been savagely beaten and sexually assaulted. The detectives working the crime were regular cops, and Douglas was a bureau guy, so you can imagine him perched on the edge of a desk, the others pulling up chairs around him.

” ‘Okay,’ I said to the detectives. . . . ‘Here’s what I think,’ ” Douglas begins. “It’s a sixteen- or seventeen-year-old high school kid. . . . He’ll be disheveled-looking, he’ll have scruffy hair, generally poorly groomed.” He went on: a loner, kind of weird, no girlfriend, lots of bottled-up anger. He comes to the old lady’s house. He knows she’s alone. Maybe he’s done odd jobs for her in the past. Douglas continues:

I pause in my narrative and tell them there’s someone who meets this description out there. If they can find him, they’ve got their offender.
One detective looks at another. One of them starts to smile. “Are you a psychic, Douglas?”
“No,” I say, “but my job would be a lot easier if I were.”
“Because we had a psychic, Beverly Newton, in here a couple of weeks ago, and she said just about the same things.”

You might think that Douglas would bridle at that comparison. He is, after all, an agent of the Federal Bureau of Investigation, who studied with Teten, who studied with Brussel. He is an ace profiler, part of a team that restored the F.B.I.’s reputation for crime-fighting, inspired countless movies, television shows, and best-selling thrillers, and brought the modern tools of psychology to bear on the savagery of the criminal mind—and some cop is calling him a psychic. But Douglas doesn’t object. Instead, he begins to muse on the ineffable origins of his insights, at which point the question arises of what exactly this mysterious art called profiling is, and whether it can be trusted. Douglas writes,

What I try to do with a case is to take in all the evidence I have to work with . . . and then put myself mentally and emotionally in the head of the offender. I try to think as he does. Exactly how this happens, I’m not sure, any more than the novelists such as Tom Harris who’ve consulted me over the years can say exactly how their characters come to life. If there’s a psychic component to this, I won’t run from it.

3.

In the late nineteen-seventies, John Douglas and his F.B.I. colleague Robert Ressler set out to interview the most notorious serial killers in the country. They started in California, since, as Douglas says, “California has always had more than its share of weird and spectacular crimes.” On weekends and days off, over the next months, they stopped by one federal prison after another, until they had interviewed thirty-six murderers.

Douglas and Ressler wanted to know whether there was a pattern that connected a killer’s life and personality with the nature of his crimes. They were looking for what psychologists would call a homology, an agreement between character and action, and, after comparing what they learned from the killers with what they already knew about the characteristics of their murders, they became convinced that they’d found one.

Serial killers, they concluded, fall into one of two categories. Some crime scenes show evidence of logic and planning. The victim has been hunted and selected, in order to fulfill a specific fantasy. The recruitment of the victim might involve a ruse or a con. The perpetrator maintains control throughout the offense. He takes his time with the victim, carefully enacting his fantasies. He is adaptable and mobile. He almost never leaves a weapon behind. He meticulously conceals the body. Douglas and Ressler, in their respective books, call that kind of crime “organized.”

In a “disorganized” crime, the victim isn’t chosen logically. She’s seemingly picked at random and “blitz-attacked,” not stalked and coerced. The killer might grab a steak knife from the kitchen and leave the knife behind. The crime is so sloppily executed that the victim often has a chance to fight back. The crime might take place in a high-risk environment. “Moreover, the disorganized killer has no idea of, or interest in, the personalities of his victims,” Ressler writes in “Whoever Fights Monsters.” “He does not want to know who they are, and many times takes steps to obliterate their personalities by quickly knocking them unconscious or covering their faces or otherwise disfiguring them.”

Each of these styles, the argument goes, corresponds to a personality type. The organized killer is intelligent and articulate. He feels superior to those around him. The disorganized killer is unattractive and has a poor self-image. He often has some kind of disability. He’s too strange and withdrawn to be married or have a girlfriend. If he doesn’t live alone, he lives with his parents. He has pornography stashed in his closet. If he drives at all, his car is a wreck.

“The crime scene is presumed to reflect the murderer’s behavior and personality in much the same way as furnishings reveal the homeowner’s character,” we’re told in a crime manual that Douglas and Ressler helped write. The more they learned, the more precise the associations became. If the victim was white, the killer would be white. If the victim was old, the killer would be sexually immature.

“In our research, we discovered that . . . frequently serial offenders had failed in their efforts to join police departments and had taken jobs in related fields, such as security guard or night watchman,” Douglas writes. Given that organized rapists were preoccupied with control, it made sense that they would be fascinated by the social institution that symbolizes control. Out of that insight came another prediction: “One of the things we began saying in some of our profiles was that the UNSUB”—the unknown subject—”would drive a policelike vehicle, say a Ford Crown Victoria or Chevrolet Caprice.”

4.

On the surface, the F.B.I.’s system seems extraordinarily useful. Consider a case study widely used in the profiling literature. The body of a twenty-six-year-old special-education teacher was found on the roof of her Bronx apartment building. She was apparently abducted just after she left her house for work, at six-thirty in the morning. She had been beaten beyond recognition, and tied up with her stockings and belt. The killer had mutilated her sexual organs, chopped off her nipples, covered her body with bites, written obscenities across her abdomen, masturbated, and then defecated next to the body.

Let’s pretend that we’re an F.B.I. profiler. First question: race. The victim is white, so let’s call the offender white. Let’s say he’s in his mid-twenties to early thirties, which is when the thirty-six men in the F.B.I.’s sample started killing. Is the crime organized or disorganized? Disorganized, clearly. It’s on a rooftop, in the Bronx, in broad daylight—high risk. So what is the killer doing in the building at six-thirty in the morning? He could be some kind of serviceman, or he could live in the neighborhood. Either way, he appears to be familiar with the building. He’s disorganized, though, so he’s not stable. If he is employed, it’s blue-collar work, at best. He probably has a prior offense, having to do with violence or sex. His relationships with women will be either nonexistent or deeply troubled. And the mutilation and the defecation are so strange that he’s probably mentally ill or has some kind of substance-abuse problem. How does that sound? As it turns out, it’s spot-on. The killer was Carmine Calabro, age thirty, a single, unemployed, deeply troubled actor who, when he was not in a mental institution, lived with his widowed father on the fourth floor of the building where the murder took place.

But how useful is that profile, really? The police already had Calabro on their list of suspects: if you’re looking for the person who killed and mutilated someone on the roof, you don’t really need a profiler to tell you to check out the dishevelled, mentally ill guy living with his father on the fourth floor.

That’s why the F.B.I.’s profilers have always tried to supplement the basic outlines of the organized/disorganized system with telling details—something that lets the police zero in on a suspect. In the early eighties, Douglas gave a presentation to a roomful of police officers and F.B.I. agents in Marin County about the Trailside Killer, who was murdering female hikers in the hills north of San Francisco. In Douglas’s view, the killer was a classic “disorganized” offender—a blitz attacker, white, early to mid-thirties, blue collar, probably with “a history of bed-wetting, fire-starting, and cruelty to animals.” Then he went back to how asocial the killer seemed. Why did all the killings take place in heavily wooded areas, miles from the road? Douglas reasoned that the killer required such seclusion because he had some condition that he was deeply self-conscious about. Was it something physical, like a missing limb? But then how could he hike miles into the woods and physically overpower his victims? Finally, it came to him: ” ‘Another thing,’ I added after a pregnant pause, ‘the killer will have a speech impediment.’ ”

And so he did. Now, that’s a useful detail. Or is it? Douglas then tells us that he pegged the ‘s age as early thirties, and he turned out to be fifty. Detectives use profiles to narrow down the range of suspects. It doesn’t do any good to get a specific detail right if you get general details wrong.

In the case of Derrick Todd Lee, the Baton Rouge serial killer, the F.B.I. profile described the offender as a white male blue-collar worker, between twenty-five and thirty-five years old, who “wants to be seen as someone who is attractive and appealing to women.” The profile went on, “However, his level of sophistication in interacting with women, especially women who are above him in the social strata, is low. Any contact he has had with women he has found attractive would be described by these women as ‘awkward.’ ” The F.B.I. was right about the killer being a blue-collar male between twenty-five and thirty-five. But Lee turned out to be charming and outgoing, the sort to put on a cowboy hat and snakeskin boots and head for the bars. He was an extrovert with a number of girlfriends and a reputation as a ladies’ man. And he wasn’t white. He was black.

A profile isn’t a test, where you pass if you get most of the answers right. It’s a portrait, and all the details have to cohere in some way if the image is to be helpful. In the mid-nineties, the British Home Office analyzed a hundred and eighty-four crimes, to see how many times profiles led to the arrest of a criminal. The profile worked in five of those cases. That’s just 2.7 per cent, which makes sense if you consider the position of the detective on the receiving end of a profiler’s list of conjectures. Do you believe the stuttering part? Or do you believe the thirty-year-old part? Or do you throw up your hands in frustration?

5.

There is a deeper problem with F.B.I. profiling. Douglas and Ressler didn’t interview a representative sample of serial killers to come up with their typology. They talked to whoever happened to be in the neighborhood. Nor did they interview their subjects according to a standardized protocol. They just sat down and chatted, which isn’t a particularly firm foundation for a psychological system. So you might wonder whether serial killers can really be categorized by their level of organization.

Not long ago, a group of psychologists at the University of Liverpool decided to test the F.B.I.’s assumptions. First, they made a list of crime-scene characteristics generally considered to show organization: perhaps the victim was alive during the sex acts, or the body was posed in a certain way, or the murder weapon was missing, or the body was concealed, or torture and restraints were involved. Then they made a list of characteristics showing disorganization: perhaps the victim was beaten, the body was left in an isolated spot, the victim’s belongings were scattered, or the murder weapon was improvised.

If the F.B.I. was right, they reasoned, the crime-scene details on each of those two lists should “co-occur”—that is, if you see one or more organized traits in a crime, there should be a reasonably high probability of seeing other organized traits. When they looked at a sample of a hundred serial crimes, however, they couldn’t find any support for the F.B.I.’s distinction. Crimes don’t fall into one camp or the other. It turns out that they’re almost always a mixture of a few key organized traits and a random array of disorganized traits. Laurence Alison, one of the leaders of the Liverpool group and the author of “The Forensic Psychologist’s Casebook,” told me, “The whole business is a lot more complicated than the F.B.I. imagines.”

Alison and another of his colleagues also looked at homology. If Douglas was right, then a certain kind of crime should correspond to a certain kind of criminal. So the Liverpool group selected a hundred stranger rapes in the United Kingdom, classifying them according to twenty-eight variables, such as whether a disguise was worn, whether compliments were given, whether there was binding, gagging, or blindfolding, whether there was apologizing or the theft of personal property, and so on. They then looked at whether the patterns in the crimes corresponded to attributes of the criminals—like age, type of employment, ethnicity, level of education, marital status, number of prior convictions, type of prior convictions, and drug use. Were rapists who bind, gag, and blindfold more like one another than they were like rapists who, say, compliment and apologize? The answer is no—not even slightly.

“The fact is that different offenders can exhibit the same behaviors for completely different reasons,” Brent Turvey, a forensic scientist who has been highly critical of the F.B.I.’s approach, says. “You’ve got a rapist who attacks a woman in the park and pulls her shirt up over her face. Why? What does that mean? There are ten different things it could mean. It could mean he ”t want to see her. It could mean he doesn’t want her to see him. It could mean he wants to see her breasts, he wants to imagine someone else, he wants to incapacitate her arms—all of those are possibilities. You can’t just look at one behavior in isolation.”

A few years ago, Alison went back to the case of the teacher who was murdered on the roof of her building in the Bronx. He wanted to know why, if the F.B.I.’s approach to criminal profiling was based on such simplistic psychology, it continues to have such a sterling reputation. The answer, he suspected, lay in the way the profiles were written, and, sure enough, when he broke down the rooftop-killer analysis, sentence by sentence, he found that it was so full of unverifiable and contradictory and ambiguous language that it could support virtually any interpretation.

Astrologers and psychics have known these tricks for years. The magician Ian Rowland, in his classic “The Full Facts Book of Cold Reading,” itemizes them one by one, in what could easily serve as a manual for the beginner profiler. First is the Rainbow Ruse—the “statement which credits the client with both a personality trait and its opposite.” (“I would say that on the whole you can be rather a quiet, self effacing type, but when the circumstances are right, you can be quite the life and soul of the party if the mood strikes you.”) The Jacques Statement, named for the character in “As You Like It” who gives the Seven Ages of Man speech, tailors the prediction to the age of the subject. To someone in his late thirties or early forties, for example, the psychic says, “If you are honest about it, you often get to wondering what happened to all those dreams you had when you were younger.” There is the Barnum Statement, the assertion so general that anyone would agree, and the Fuzzy Fact, the seemingly factual statement couched in a way that “leaves plenty of scope to be developed into something more specific.” (“I can see a connection with Europe, possibly Britain, or it could be the warmer, Mediterranean part?”) And that’s only the start: there is the Greener Grass technique, the Diverted Question, the Russian Doll, Sugar Lumps, not to mention Forking and the Good Chance Guess—all of which, when put together in skillful combination, can convince even the most skeptical observer that he or she is in the presence of real insight.

“Moving on to career matters, you don’t work with children, do you?” Rowland will ask his subjects, in an example of what he dubs the “Vanishing Negative.”

No, I don’t.

“No, I thought not. That’s not really your role.”

Of course, if the subject answers differently, there’s another way to play the question: “Moving on to career matters, you don’t work with children, do you?”

I do, actually, part time.

“Yes, I thought so.”

After Alison had analyzed the rooftop-killer profile, he decided to play a version of the cold-reading game. He gave the details of the crime, the profile prepared by the F.B.I., and a description of the offender to a group of senior police officers and forensic professionals in England. How did they find the profile? Highly accurate. Then Alison gave the same packet of case materials to another group of police officers, but this time he invented an imaginary offender, one who was altogether different from Calabro. The new killer was thirty-seven years old. He was an alcoholic. He had recently been laid off from his job with the water board, and had met the victim before on one of his rounds. What’s more, Alison claimed, he had a history of violent relationships with women, and prior convictions for assault and burglary. How accurate did a group of experienced police officers find the F.B.I.’s profile when it was matched with the phony offender? Every bit as accurate as when it was matched to the real offender.

James Brussel didn’t really see the Mad Bomber in that pile of pictures and photostats, then. That was an illusion. As the literary scholar Donald Foster pointed out in his 2000 book “Author Unknown,” Brussel cleaned up his predictions for his memoirs. He actually told the police to look for the bomber in White Plains, sending the N.Y.P.D.’s bomb unit on a wild goose chase in Westchester County, sifting through local records. Brussel also told the police to look for a man with a facial scar, which Metesky didn’t have. He told them to look for a man with a night job, and Metesky had been largely unemployed since leaving Con Edison in 1931. He told them to look for someone between forty and fifty, and Metesky was over fifty. He told them to look for someone who was an “expert in civil or military ordnance” and the closest Metesky came to that was a brief stint in a machine shop. And Brussel, despite what he wrote in his memoir, never said that the Bomber would be a Slav. He actually told the police to look for a man “born and educated in Germany,” a prediction so far off the mark that the Mad Bomber himself was moved to object. At the height of the police investigation, when the New York Journal American offered to print any communications from the Mad Bomber, Metesky wrote in huffily to say that “the nearest to my being ‘Teutonic’ is that my father boarded a liner in Hamburg for passage to this country—about sixty-five years ago.”

The true hero of the case wasn’t Brussel; it was a woman named Alice Kelly, who had been assigned to go through Con Edison’s personnel files. In January, 1957, she ran across an employee complaint from the early nineteen-thirties: a generator wiper at the Hell Gate plant had been knocked down by a backdraft of hot gases. The worker said that he was injured. The company said that he wasn’t. And in the flood of angry letters from the ex-employee Kelly spotted a threat—to “take justice in my own hands”—that had appeared in one of the Mad Bomber’s letters. The name on the file was George Metesky.

Brussel did not really understand the mind of the Mad Bomber. He seems to have understood only that, if you make a great number of predictions, the ones that were wrong will soon be forgotten, and the ones that turn out to be true will make you famous. The Hedunit is not a triumph of forensic analysis. It’s a party trick.

6.

“Here’s where I’m at with this guy,” Douglas said, kicking off the profiling session with which “Inside the Mind of BTK” begins. It was 1984. The killer was still at large. Douglas, Hazelwood, and Walker and the two detectives from Wichita were all seated around the oak table. Douglas took off his suit jacket and draped it over his chair. “Back when he started in 1974, he was in his mid-to-late twenties,” Douglas began. “It’s now ten years later, so that would put him in his mid-to-late thirties.”

It was Walker’s turn: BTK had never engaged in any sexual penetration. That suggested to him someone with an “inadequate, immature sexual history.” He would have a “lone-wolf type of personality. But he’s not alone because he’s shunned by others—it’s because he chooses to be alone. . . . He can function in social settings, but only on the surface. He may have women friends he can talk to, but he’d feel very inadequate with a peer-group female.” Hazelwood was next. BTK would be “heavily into masturbation.” He went on, “Women who have had sex with this guy would describe him as aloof, uninvolved, the type who is more interested in her servicing him than the other way around.”

Douglas followed his lead. “The women he’s been with are either many years younger, very naïve, or much older and depend on him as their meal ticket,” he ventured. What’s more, the profilers determined, BTK would drive a “decent” automobile, but it would be “nondescript.”

At this point, the insights began piling on. Douglas said he’d been thinking that BTK was married. But now maybe he was thinking he was divorced. He speculated that BTK was lower middle class, probably living in a rental. Walker felt BTK was in a “lower-paying white collar job, as opposed to blue collar.” Hazelwood saw him as “middle class” and “articulate.” The consensus was that his I.Q. was somewhere between 105 and 145. Douglas wondered whether he was connected with the military. Hazelwood called him a “now” person, who needed “instant gratification.”

Walker said that those who knew him “might say they remember him, but didn’t really know much about him.” Douglas then had a flash—”It was a sense, almost a knowing”—and said, “I wouldn’t be surprised if, in the job he’s in today, that he’s wearing some sort of uniform. . . . This guy isn’t mental. But he is crazy like a fox.”

They had been at it for almost six hours. The best minds in the F.B.I. had given the Wichita detectives a blueprint for their investigation. Look for an American male with a possible connection to the military. His I.Q. will be above 105. He will like to masturbate, and will be aloof and selfish in bed. He will drive a decent car. He will be a “now” person. He won’t be comfortable with women. But he may have women friends. He will be a lone wolf. But he will be able to function in social settings. He won’t be unmemorable. But he will be unknowable. He will be either never married, divorced, or married, and if he was or is married his wife will be younger or older. He may or may not live in a rental, and might be lower class, upper lower class, lower middle class or middle class. And he will be crazy like a fox, as opposed to being mental. If you’re keeping score, that’s a Jacques Statement, two Barnum Statements, four Rainbow Ruses, a Good Chance Guess, two predictions that aren’t really predictions because they could never be verified—and nothing even close to the salient fact that BTK was a pillar of his community, the president of his church and the married father of two.

“This thing is solvable,” Douglas told the detectives, as he stood up and put on his jacket. “Feel free to pick up the phone and call us if we can be of any further assistance.” You can imagine him taking the time for an encouraging smile and a slap on the back. “You’re gonna nail this guy.”