Time to complicate things

If we stop trying to simplify our economic models, we can improve policy.

According to the increasingly influential school of complexity economics, decisions that at the "micro" level might seem rational, when they become manifest at the "macro" level produce outcomes that are detrimental to all. Several "rights" often combine to produce a "wrong". This can help to explain problems like why there is such an unequal distribution of wealth in many developed economies and why some regions remain depressed for long periods of time.

Neo-classical economics finds it difficult to account for such emergent problems because it is based on a framework of simple, bilateral exchanges between individuals (people and firms). It is forced to regard economy-wide problems as the result of some external disruption to the normal running of free bilateral exchange. As a result, it has failed to develop an adequate theory that makes a connection between individual decisions and developments in the aggregate economy.  

The new fields of complexity theory and network theory help us to understand the economy as a dynamic network, rather than as the static model of bilateral exchange, which underlies orthodox economics. With this new understanding, we can start to develop policy options that might respond more effectively to problems like inequality of wealth.  

Although the school of complexity economics and the idea of emergent phenomena are relatively new, the recognition of system-wide economic problems is clearly not. But, for a long time, most economic thinking has held that many of our fundamental challenges, such as inequality and climate issues, are the result of market failures and can only be solved by using the power of the state to correct any such failures.  

A complexity perspective suggests the state’s top-down bureaucracy cannot, as it currently operates, offer effective and sustainable solutions to emergent economic problems. The state's policy-making incorporates the idea that society acts like a machine that responds automatically to a stimulus (such as a tax cut) in the same way each time, in large part because mainstream economics has taken a very narrow view of human nature and interaction. This has been explored most recently by Paul Ormerod in his book, Positive Linking.

Complexity theory is based on the core observation that social systems are dynamic, evolving networks in which individual and collective behaviour can shift and change rapidly and unexpectedly. The fluidity of this system means attempts to control an economy by gathering data, making forecasts and developing policy will always be subject to a high risk of failure. Mechanistic approaches to policy can be extremely problematic, for at least four broad reasons:  

  1. Idiosyncrasies matter and it is a near impossibility for a centrally determined policy to remain sensitive to local circumstances.
  2. Remotely set targets can be inaccurate proxies for real aims.
  3. Network effects can drown out the very incentives that form the core of most policy responses.
  4. Incentives are often set as if people were selfish maximisers of their own utility - but this is very often untrue.  

The neoclassical approach is comforting in the sense it implies that following simple, easy to devise, mechanical policy rules can solve some problems. But it is misleading because the economy does not work in the way it suggests, which often leads to inappropriate policy ideas. With the complexity approach things are, roughly speaking, the other way around. It suggests policy responses to certain problems will be hard to draw up, and the right answer might be found only after experimentation, simulation, and pilot studies. But the policy formed as a result is more likely to be suited to the policy challenge.  

The new fields of complexity and network theory advocate building up an understanding of the real world from the ground up. In doing so, they paint a picture of the real world that is much more recognisable than the abstractions of neoclassical economics. As such, they have the potential to offer new approaches to seemingly intractable policy problems, and, because these approaches are inherently apolitical, they ought to be of interest to all political parties.

This is an edited extract of a chapter from IPPR’s forthcoming book, Complex New World: translating new economic thinking into public policy. For more see here.

A bifurcation diagram showing a common representation of chaos theory. Photograph: Wikimedia Commons

Adam Lent is the Director of Programmes at the RSA. Greg Fisher is the Managing Director of Synthesis.

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Keir Starmer: “I don’t think anybody should underestimate the risks of getting Brexit wrong”

The former director of public prosecutions is now heading up Labour’s response to Brexit. But can he succeed in holding the Tories’ feet to the fire?

Early in his new role as shadow Brexit secretary, Keir Starmer was accused of being a “second-rate lawyer”. The gibe, in a Commons debate, came from none other than Iain Duncan Smith. Starmer was director of public prosecutions for five years and later stood for parliament in 2015. No novice, then. Within a few days, Duncan Smith stood again in the House, this time to offer his apologies.

A fortnight later, I met Starmer at his quiet office in Westminster. He was sitting at a table piled with papers, in an office that, a discreet family photo aside, was unadorned. He had just got back from a whirlwind trip to Brussels, with many more such visits planned in the weeks ahead.

Starmer returned to the shadow cabinet after Jeremy Corbyn’s second leadership election victory last month. “The series of agreements we will have to reach in the next few years is probably the most important and complex we’ve had to reach since the Second World War,” he told me.

Starmer, who is 54, took his time entering politics. Born in 1962, he grew up in a Labour-supporting household in Surrey – his father was a toolmaker and his mother a nurse – and was named after Keir Hardie. After studying law at Leeds University, he practised as a human rights barrister and became a QC in 2002. In 2008, after varied legal work that included defending environmental campaigners in the McLibel case, he became the head of the Crown Prosecution Service for England and Wales as well as director of public prosecutions, positions he held until 2013.

When in 2015 Starmer ran for a seat in parliament to represent Holborn and St Pancras in London, it was assumed he would soon be putting his expertise to use in government. Instead, after Labour’s election defeat under Ed Miliband, he served as one of Corbyn’s junior shadow ministers, but resigned after the EU referendum in June.

Now, he is back on the opposition front bench and his forensic scrutiny of government policy is already unsettling the Conservatives. Philippe Sands, the law professor who worked with him on Croatia’s genocide lawsuit against Serbia, says he couldn’t think of anyone better to take on the Brexiteers in parliament. “It’s apparent that the government is rather scared of him,” Sands said. This is because Starmer is much more capable of teasing out the legal consequences of Brexit than the average Brexit-supporting Tory MP. Sands added: “It would be fun to watch if the stakes weren’t so very high.”

Starmer is a serious man and refused to be drawn on the character of his opponents. Instead, speaking slowly, as if weighing every word, he spelled out to me the damage they could cause. “The worst scenario is the government being unable to reach any meaningful agreement with the EU and [the UK] crashing out in March 2019 on no terms, with no transitional arrangement.” The result could be an economic downturn and job losses: “I don’t think anybody should underestimate the risks of getting this wrong.”

If Starmer seems pessimistic, it is because he believes time is short and progress has been slow. Since the referendum, disgruntled MPs have focused their attention on the final Brexit settlement. Yet if, as he argues, the starting position for our negotiations with the EU is wrong, the damage will have been done. MPs faced with a bad deal must either approve it or “risk the UK exiting the EU without a deal at all”.

It is this conviction that is driving his frantic schedule now. Starmer’s first month in the job is packed with meetings - with the representatives of the devolved nations, business leaders and his European counterparts.

He has also become a familiar face at the dispatch box. Having secured a commitment from David Davis, the minister for Brexit, that there will be transparent debate – “the words matter” – he is now demanding that plans to be published in January 2017 at the earliest, and that MPs will have a vote at this stage.

In his eyes, it will be hard for the Prime Minister, Theresa May, to resist, because devolved parliaments and the European parliament will almost certainly be having a say: “The idea there will be a vote in the devolved administrations but not in Westminster only needs to be stated to see it’s unacceptable.”

In Europe, Starmer said, the view is already that Britain is heading for the cliff edge. It was May’s pledge, that after Brexit the UK would not “return to the jurisdiction of the European Court of Justice”, which raised alarm. And among voters, there is “increasing anxiety” about the direction in which the UK is moving, he said. Even Tory voters are writing to him.

In the Labour Party, which is putting itself back together again after the summer’s failed coup, immigration remains the most vexed issue. Starmer told me that Labour had “earned a reputation for not listening” on the issue. Speaking on The Andrew Marr Show shortly after becoming shadow Brexit secretary, he said immigration was too high and ought to be reduced. But later that same day, Diane Abbott, a shadow cabinet colleague, contradicted him, publicly criticising immigration targets.

Starmer believes there is a bigger picture to consider when it comes to Britain’s Brexit negotiations. Take national security, where he warns that there are “significant risks” if communications break down between the UK and the EU. “Part of the negotiations must be ensuring we have the same level of co-operation on criminal justice, counterterrorism, data-sharing,” he said.

Crucially, in a Labour Party where many experienced politicians are backbench dissenters, he wants to reach out to MPs outside the shadow cabinet. “We have to work as Team Labour,” he stressed.

It’s a convincing rallying cry. But for some MPs, he represents more than that: a lone moderate in what can be seen as a far-left leadership cabal. Does he have any ambitions to lead Labour? “Having had two leadership elections in the space of 12 months, the last thing we need at the moment is discussion of the leadership of the Labour Party.” He has agreed to serve in the shadow cabinet, and is determined to stay there.

Starmer has found his purpose in opposition. “If we think things aren’t going right, we’ve got to call it out early and loudly. The worst situation is that we arrive at March 2019 with the wrong outcome. By then, it will be too late.”

Julia Rampen is the editor of The Staggers, The New Statesman's online rolling politics blog. She was previously deputy editor at Mirror Money Online and has worked as a financial journalist for several trade magazines. 

This article first appeared in the 27 October 2016 issue of the New Statesman, American Rage