Beware those Black Swans

The bestselling economist Nassim Nicholas Taleb argues that we can’t make the world financial system

After completing my book The Black Swan, I spent some time meditating on the fragility of systems with the illusion of stability. This convinced me that the banking system was the mother of all accidents waiting to happen. I explained in the book that the best teachers of wisdom are the eldest, because they may have picked up invisible tricks that are absent from our epistemic routines and which help them survive in a world more complex than the one we think we understand. So being old implies a higher degree of resistance to "Black Swans" (events with the following three attributes: they lie outside the realm of regular expectations; they carry an extreme impact; and human nature makes us concoct explanations for their occurrence after the fact).

Take Mother Nature, which is clearly a complex system, with webs of interdependence, non-linearities and a robust ecology (otherwise it would have blown up a long time ago). It is a very old person with an impeccable memory. Mother Nature does not develop Alz­heimer's - and there is evidence that even humans would not easily lose brain functions with age if they took long walks, avoided sugar, bread, white rice and stock-market investments, and refrained from taking economics classes or reading the New York Times.

Let me summarise my ideas of how Mother Nature deals with the Black Swan. First, she likes redundancies. Look at the human body. We have two eyes, two lungs, two kidneys, even two brains (with the possible exception of company executives) - and each has more capacity than is needed ordinarily. So redundan­cy equals insurance, and the apparent inefficiencies are associated with the costs of maintain­ing these spare parts and the energy needed to keep them around in spite of their idleness.

The exact opposite of redundancy is naive optimisation. The reason I tell people to avoid attending an (orthodox) economics class and argue that economics will fail us is the following: economics is largely based on notions of naive optimisation, mathematised (poorly) by Paul Samuelson - and these mathematics have contributed massively to the construction of an error-prone society. An economist would find it inefficient to carry two lungs and two kidneys - consider the costs involved in transporting these heavy items across the savannah. Such optimisation would, eventually, kill you, after the first accident, the first "outlier". Also, consider that if we gave Mother Nature to economists, it would dispense with individual kidneys - since we do not need them all the time, it would be more "efficient" if we sold ours and used a central kidney on a time-share basis. You could also lend your eyes at night, since you do not need them to dream.

Almost every major idea in conventional economics fails under the modification of some assumption, or what is called "perturbation", where you change one parameter or take a parameter henceforth assumed to be fixed and stable by the theory, and make it random. Take the notion of comparative advantage, supposedly discovered by David Ricardo, and which has oiled the wheels of globalisation. The idea is that countries should focus on "what they do best". So one country should specialise in wine, another in clothes, even though one of them might be better at both. But consider what would happen to the country if the price of wine fluctuated. A simple perturbation around this assumption leads one to reach the opposite conclusion to Ricardo. Mother Nature does not like overspecialisation, as it limits evolution and weakens the animals.

This explains why I found the current ideas on globalisation (such as those promoted by the journalist Thomas Friedman) too naive, and too dangerous for society - unless one takes into account the side effects. Globalisation might give the appearance of efficiency, but the operating leverage and the degrees of interaction between parts will cause small cracks in one spot to percolate through the entire system.

The debt taboo

The same idea applies to debt: it makes you very fragile under perturbations. We currently learn in business schools to engage in borrowing, against all historical traditions (all Mediterranean cultures developed over time a dogma against debt). "Felix qui nihil debet", goes the Roman proverb: "Happy is he who owes nothing." Grandmothers who survived the Great Depression would have advised doing the exact opposite of getting into debt: have several years of income in cash before any personal risk-taking. Had the banks done the same, and kept high cash reserves while taking more aggressive risks with a smaller portion of their port­folios, there would have been no crisis.

Documents dating back to the Babylonians show the ills of debt, and Near Eastern religions banned it. This tells me that one of the purposes of religious traditions has been to enforce prohibitions to protect people against their own epistemic arrogance. Why? Debt implies a strong statement about the future, and a high degree of reliance on forecasts. If you borrow $100 and invest in a project, you still owe $100 even if you fail in the project (but you do a lot better in case you succeed). So debt is dangerous if you are overconfident about the future and are Black Swan-blind - which we all tend to be. And forecasting is harmful since people (especially governments) borrow in response to a forecast (or use the forecast as a cognitive excuse to borrow). My "Scandal of Prediction" (bogus predictions that seem to be there to satisfy psychological needs) is compounded by the "Scandal of Debt": borrowing makes you more vulnerable to forecast error.

Just as Mother Nature likes redundancies, so she abhors anything that is too big. The largest land animal is the elephant, and there is a reason for that. If I went on a rampage and shot an elephant, I might be put in jail and get yelled at by my mother, but I would hardly disturb the ecology of Mother Nature. On the other hand, my point about banks in my book - that if you shot a large bank, I would "shiver at the consequences" and that "if one falls, they all fall" - was subsequently illustrated by events: one bank failure, Lehman Brothers, in September 2008, brought down the entire edifice.

The crisis of 2008 provides an illustration of the need for robustness. Over the past 2,500 years of recorded ideas, only fools and Platonists have believed in engineered utopias. We shouldn't think that we can correct mistakes and eliminate randomness from social and economic life. The challenge, rather, is to ensure that human mistakes and miscalculations remain confined, and to avoid them spreading through the system - just the way Mother Nature does it. Reducing randomness increases exposure to Black Swans.

My dream is to have a true "epistemocracy"; that is, a society robust against expert errors, forecasting errors and hubris, one that can be resistant to the incompetence of politicians, regulators, economists, central bankers, bank­ers, policy wonks and epidemiologists.Here are ten principles for a Black Swan-robust society.

What is fragile should break early while it's still small: Nothing should ever become too big to fail. Evolution in economic life helps those with the maximum amount of hidden risks become the biggest.

No socialisation of losses and privatisation of gains: Whatever may need to be bailed out should be nationalised; whatever does not need a bailout should be free, small and risk-bearing. We got ourselves into the worst of capitalism and socialism. In France, in the 1980s, the Socialists took over the banks. In the US in the 2000s, the banks took over the government. This is surreal.

People who drove a school bus blindfolded (and crashed it) should never be given a new bus: The economics establishment lost its legitimacy with the failure of the system in 2008. Find the smart people whose hands are clean to get us out of this mess.

Don't let someone making an "incentive" bonus manage a nuclear plant - or your financial risks: Odds are he would cut every corner on safety to show "profits" from these savings while claiming to be "conservative". Bonuses don't accommodate the hidden risks of blow-ups. It is the asymmetry of the bonus system that got us here. No incentives without disincentives.

Time to definancialise

Compensate complexity with simplicity: Complexity from globalisation and highly networked economic life needs to be countered by simplicity in financial products. Complex systems survive thanks to slack and redundancy, not debt and optimisation.

Do not give children sticks of dynamite, even if they come with a warning label: Complex financial products need to be banned because nobody understands them, and few are rational enough to know it. We need to protect citizens from themselves, from bankers selling them "hedging" products, and from gullible regulators who listen to economic theorists.

Only Ponzi schemes should depend on confidence: Governments should never need to "restore confidence". Cascading rumours are a product of complex systems. Governments cannot stop the rumours. We just need to be able to shrug off rumours, to be robust to them. Do not give an addict more drugs if he has withdrawal pains: Using leverage to cure the problems of too much leverage is not homoeopathy, it's denial. The debt crisis is not a temporary problem, it's a structural one. We need rehab.

Citizens should not depend on financial assets as a repository of value and rely on fallible "expert" advice for their retirement: Economic life should be definancialised. We should learn not to use markets as warehouses of value.

Make an omelette with the broken eggs: The crisis of 2008 was not a problem to fix with makeshift repairs. We will have to remake the system before it does so itself. Let us move voluntarily into a robust economy by helping what needs to be broken break on its own, converting debt into equity, marginalising the economics and business school establishments, banning leveraged buyouts, putting bankers where they belong, clawing back the bonuses of those who got us here and teaching people to navigate a world with fewer certainties. Then we will see an economic life closer to our biological environment: smaller firms and no leverage - a world in which entrepreneurs, not bankers, take the risks, and in which companies are born and die every day without making the news.

Extracted from the postscript to "The Black Swan: the Impact of the Highly Improbable" by Nassim Nicholas Taleb (Penguin, £9.99)
© Nassim Nicholas Taleb 2008 penguin.co.uk

This article first appeared in the 05 July 2010 issue of the New Statesman, The cult of the generals

© MARK PETERSON/REDUX/EYEVINE
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Goodbye to the Confederate flag

After the shootings in Charleston, the Republican right showed it was finally ready to reject the old symbols of the Confederacy.

On 27 June, an African-American activist named Bree Newsome woke up before dawn, put on her climbing equipment and scaled a 30-foot flagpole on the lawn of State House in Columbia, South Carolina. She then removed the Confederate battle flag that flew from it. “We can’t wait any longer,” she explained later in an online statement. “It’s time for a new chapter where we are sincere about dismantling white supremacy.”

After she was led away in handcuffs, the flag was raised again.

Newsome’s protest reflected a growing impatience within America’s black community and anger about liberal inaction. Political rallies by the Democratic presidential contenders Hillary Clinton and Bernie Sanders have been disrupted by the Black Lives Matter campaign against violence committed on young African Americans and the cultural and legal biases that justify it. While promoting his book on race in the US, the writer Ta-Nehisi Coates argued that, to African Americans, the battle flag represents a lingering attempt “to bury the fact that half this country thought it was a good idea to raise an empire rooted in slavery”.

Yet, on this matter, to everyone’s surprise, the black civil rights movement and many southern Republicans have proved to be of one mind. On 9 July the House of Representatives in South Carolina voted to lower the battle flag for good. It stood, representatives said, for racism. It had to go.

The context of this agreement was a painful one. Ten days before Newsome’s act, a 21-year-old white man named Dylann Roof shot and killed nine black worshippers at the Emanuel African Methodist Episcopal Church in Charleston, South Carolina. According to his room-mate, he wanted to start a race war. The TV screens showed a photo of him holding a gun in one hand and a Confederate battle flag in the other.

If the demands for redress made by civil rights groups didn’t come as a surprise, conservative acquiescence did. The Republican Party had built a solid base in the South by courting white voters who cherished the memory of the Confederacy. Yet the party’s presidential hopefuls from both the North and the South – including Jeb Bush, Lindsey Graham, Scott Walker and George Pataki – said that the battle flag ought to be lowered. The most striking intervention was made by the governor of South Carolina, Nikki Haley, who denounced the use of the Confederate flag and signed the bill removing it. Haley is now tipped to figure on the list of potential vice-presidential nominees.

The volte-face of the US right is in part a result of the horror of the Charleston shootings. Yet it also occurs in the context of major shifts within American society. There are still many conservatives who will defend Confederate heritage as a matter of southern pride but the culture wars are changing as the US becomes increasingly European in outlook. This is taking place across the country. It just happens to be more pronounced in the South because no other region has fought so violently and so long to resist the liberal tide.

The story of the battle flag is the story of the South. The first official Confederate flag used in the civil war of 1861-65 caused confusion during fighting – through the haze of gun smoke, its design of 13 stars and red and white bars was hard to distinguish from the Stars and Stripes. An alternative blue cross was rejected for being too sectarian; the racist Confederacy was anxious not to offend its Jewish citizens. So the cross became a diagonal X. This flag was never officially adopted by the Confederate army. In the years after the war its use was infrequent.

There was little need to visualise southern difference in a flag. It was self-evident in the physical signs of racial segregation: separate schools, pools and drinking fountains; black people confined to the back of the bus. Political displays of the battle flag of Dixie (the historical nickname for the states that seceded from the Union) only really resurfaced when that racial order was challenged by northern liberals. In 1948, the Democrats – then the party overwhelmingly in control of the South – split over modest calls for civil rights. The conservatives who refused to support that year’s presidential ticket, the “Dixiecrats”, triggered a rev­ival of flag-waving across the region.

The old battle flag suddenly appeared on private lawns, on cars and at political rallies. Supposedly ancient cultural traditions were invented overnight. For instance, the 1948 student handbook of the University of Mississippi confessed: “Many Ole Miss customs are fairly new; they lack only the savouring which time brings . . . Ole Miss has adopted the Confederate flag as a symbol of the Mississippi spirit. Each football game finds the scarlet flag frantically waving to the rhythm of the Rebel band.”

I can confirm that this “tradition” was still going as recently as in 2005. That year, I attended an American football game at Ole Miss and was surprised when the band played “Dixie” at the end. White boys and white girls stood up and belted out the folk song of the Confederacy, while black students filed out.

In 1958, South Carolina made it a crime to desecrate the battle flag. Three years later, on the 100th anniversary of the outbreak of the civil war, it was hoisted above its Capitol building in Columbia. That day, there was a struggle in the US Congress to keep federal funding going for segregated schools.

So clear is the link between the postwar white resistance to civil rights and the battle flag that many see it as the symbolic equivalent of the N-word. Jack Hunter, the editor of the conservative website Rare Politics, says: “Some people insist that it’s not about racism, not about slavery, not about segregation. But it’s about all those things.” Hunter grew up in Charleston and used to skateboard in the car park of the church that Dylann Roof attacked. When he was a young journalist, he appeared on local radio as a rabidly right-wing masked character called “the Southern Avenger”. His past was exposed in 2013 while he was working for Rand Paul, a Republican presidential candidate, and Hunter stepped down from his position. He publicly renounced his youthful association with racial conservatism. He now eschews any romanticism about the Confederate cause and its demand for states’ rights. “States’ rights to do what?” he asks: the right to discriminate against African Americans? He is glad that the State House flag is gone. He ascribes its longevity to ignorance, which was corrected by Roof’s rampage: “It was the first time that [southern Republicans] were able to see a different perspective on this symbol.”

Not everyone agrees. Richard Hines – a former South Carolina legislator, Reagan campaign state co-chair and senior activist with the Sons of Confederate Veterans – insists that the flag is “an enduring symbol of the southern fighting man”. Indeed, a poll in July found that 57 per cent of Americans think it stands for southern heritage, rather than racism. Yet that heritage has a political dimension. “Southern people are proud of who they are and there is a leftist assault to destroy the best part of America,” Hines says. “The Trotskyite elite in control of the establishment wants to root out the southern tradition” – a tradition of religious devotion, chivalry and military honour. It is possible to cast the battle flag as a pawn in a much larger cultural conflict.

In 2000, civil rights activists lobbied hard to get the battle flag removed from the top of the South Carolina Capitol and succeeded in having it shrunk in size and relocated to the grounds of State House. The issue came up in that year’s Republican presidential primaries – an unusually poisonous contest between George W Bush and John McCain. Supporters of Bush put out a false story that McCain had fathered an interracial child out of wedlock. McCain added to his woes by opining that the battle flag was “a symbol of racism and slavery”. An organisation called Keep It Flying flooded the state with 250,000 letters attacking him and he lost the crucial competition here to Bush.

The battle flag has retained a strong emotional power for a long time. This makes the Republican establishment’s abandonment of the flag all the more surprising. Then again, those who run the South are probably the people most likely to grasp how much the region has changed in just a decade.

***

In 2010 I took a trip through North Carolina. The landscape told a story. Dotted along the roadside were abandoned black buildings, the old tobacco sheds. The decline of the rural economy had rendered them obsolete. Over the fields that would once have been full of farmers were freshly tarmacked roads, stretching out to nowhere. My guide explained that these were supposed to be cul-de-sacs for new houses. North Carolina was going through a property boom. But who was going to buy all those homes, I asked? The answer: damn Yankees.

Demography is destiny. This once agri­cultural region developed fast from the 1960s onwards by keeping union membership, taxes and regulation as low as possible. Yet capitalism proved disastrous for southern conservatism. Northerners flooded in, seeking work or retirement and bringing their own values. The forecast is that North Carolina’s Research Triangle – the South’s Silicon Valley – will grow by 700,000 jobs and 1.2 million people in two decades.

White migration was accompanied by an influx of Spanish speakers as the service sector flourished. Between 2000 and 2010, the white share of the population of North Carolina fell from 70 to 65 per cent. The black proportion remained at roughly 21 per cent. The Latino proportion, however, jumped from 4.7 per cent to 8.4 per cent. Today, the proportion of people who are non-white and over 60 is about a third. But it’s approaching nearly half for those under 18. As a result, politics in the South is no longer biracial: a contest between white and black. It is increasingly multiracial and uncoupled from the region’s complex past.

The impact of these changes is reflected in voting patterns. In 2000, the South was still overwhelmingly Republican in presidential contests. Even the Democratic nominee, Al Gore, a southerner, lost his home state of Tennessee. But in 2008 and 2012, Barack Obama took those states with the fastest-changing demographics: Florida and Virginia. He won North Carolina in 2008 and lost it in 2012 – but by less than 100,000 votes. It is true that the Republicans won back control in the 2014 midterm elections, with the result that the Deep South now sends few Democrats to Congress; but the region’s political masters are not quite as traditional-minded as they once were.

The Republican relationship with the Confederate past is complex. As the party of Abraham Lincoln and the Union, the GOPs’ southern support was historically small. But in the 1960s the national Democratic Party embraced civil rights and alienated its once loyal southern following; the Republicans took the opportunity to steal some conservative white voters.

The growing southern Republican vote had a class component. Its success in local and congressional races was built more on winning over middle-class moderates than on appealing to the working-class racists who filled the ranks of the Ku Klux Klan. The southern Republican Party did enthusiastically embrace the Confederate battle flag in many quarters. But some office-holders did so only with ambiguity, while large sections of the party never identified with it at all. The period of Republican ascendancy in the South was, in reality, linked with a softening of the area’s racial politics.

Two of the Republicans’ current southern stars are Indian Americans: Bobby Jindal, the governor of Louisiana, and Nikki Haley, the anti-flag governor of South Carolina. There are just two black people in the US Senate and one of them is a Republican, the Tea Party-backed senator for South Carolina, Tim Scott. Marco Rubio, the Floridian senator and presidential candidate, is Cuban American, and the former Florida governor Jeb Bush is married to a Mexican-born woman and speaks fluent Spanish. Bush has tried to push a more moderate line on immigration, in deference to how the GOP will struggle to win the White House if it appeals only to angry white voters. The Kentucky libertarian senator Rand Paul, Jack Hunter’s former boss, has called for legal reforms to correct the trend of keeping far more black than white people in prison. And he is not the only Republican to have been moved by recent race riots sparked by police violence.

***

Violence on the streets of Ferguson, Missouri, and Baltimore, Maryland, confirmed that there still is a culture war in the US. Yet its character has changed. In the past, civil disturbances were typically leapt upon by conservative politicians as evidence of social decline. The 1992 LA riots were blamed on single parenthood and rap lyrics. In contrast, conservative leaders today are far more likely to acknowledge the problems of white racism. There is no place in their ranks for the likes of Dylann Roof. White supremacists are tiny in number.

Jack Hunter claims: “The KKK is like 12 guys in a telephone booth. Liberal groups will use their threat for fundraising but it doesn’t exist. It hasn’t properly since the 1960s.” Roof’s actions say more about gun control, mental illness and the angst of the young than they do about popular, largely liberal views on race, as polling shows.

We can see a similar liberal shift in other areas of the historic culture war. In May 2015 Gallup released the results of a “moral acceptability” survey charting changes in national attitude across all age groups, from 2001 to 2015. Approval of gay relationships jumped from 40 to 63 per cent; having a baby out of wedlock from 45 to 61 per cent; sex between unmarried men and women from 53 to 68 per cent; doctor-assisted suicide from 49 to 56 per cent; even polygamy went from 7 to 16 per cent. Abortion remained narrowly disapproved of: support for access has only crept up from 42 to 45 per cent. This is probably a result of an unusual concentration of political and religious opposition and because it involves a potential life-or-death decision. But the general trend is that young people just don’t care as much about what consenting adults get up to.

Why? It might be because old forms of identity are dying. One way of measuring that is religious affiliation. From 2007 to 2014, according to Pew Research, the proportion of Americans describing themselves as Christian fell from 78 to 71 per cent. Today, only a quarter of the population is evangelical and 21 per cent Catholic, down despite high immigration. Then there is the decline in civic or communal activity. Since 2012, the organisers of Nascar, the stock-car races, have not published attendance figures at their tracks, probably because they have fallen so sharply. The decline of this most macho and working class of sports parallels the fall in conservative forms of collective identity such as southern traditionalism.

The old culture war was, like the racial politics of the old South, binary. In the 1950s, around the same time as the South invented its tradition of flying the battle flag in colleges, the US constructed an ideal of the “normal” nuclear family unit: straight, white, patriarchal, religious. On the other side was the “abnormal”: gay, black, feminist, atheist, and the rest. The surest way to get elected in the US between 1952 and 2004 was to associate yourself with the economic needs and cultural prejudices of the majority. The approach was once summed up by a Richard Nixon strategist thus: split the country in two and the Republicans will take the larger half. But that is changing. The old normal is no longer the cultural standard but just one of many identities to choose from. The races are mixing. Women want to work more and have children later in life, possibly without marriage. Many religious people are having to rethink their theology when a child comes out as gay. And the enforcers of the old ways – the unions, churches or political parties – are far less attractive than the atomising internet.

***

Politicians are scrabbling to keep up with the diffusion of American identity. Democrats got lucky when they nominated Barack Obama and chose a presidential candidate who reflected the fractured era well: interracial, non-denominational Christian, and so on. In the 2012 presidential race the Republicans got burned when they tried to play the old culture war card on abortion. They won’t repeat that mistake. After the Supreme Court legalised gay marriage across the country in June, the right’s response was not as uniformly loud and outraged as it would have been in the past. Some protested, but serious presidential contenders such as Jeb Bush grasped the implications of the defeat. There is a cultural and political realignment going on and no one is sure where it will lead. It’s encouraging caution among the Republican top brass. It is time, they think, to abandon lost causes.

The death of southern traditionalism is part of the ebb and flow of cultural history. Identities flourish and die. As political fashions change, you find the typically American mix of triumph on one side and jeremiad on the other. Richard Hines stood vigil as the battle flag was lowered in Columbia and noted with disgust the presence of what he described as “bussed-in” activists. “They pulled out all these gay pride flags and started shouting, ‘USA, USA, USA!’ It reminded me of the Bolshevik Revolution.”

Hines reckons that more southerners will now fly the flag than ever before and says he has attended overflow rallies of ordinary folks who love their region. He may well be correct. The faithful will keep the old Confederate standard fluttering on their lawns – an act of secession from the 21st century. But in the public domain, the battle flag is on its way down and in its place will be raised the standard of the new America. The rainbow flag flutters high. For now.

Tim Stanley is a historian and a columnist for the Telegraph

This article first appeared in the 20 August 2015 issue of the New Statesman, Corbyn wars