Economic forecasting came in for much criticism at the time of the financial crisis and credit crunch. Few economists had predicted the crisis and its consequences. Even Queen Elizabeth II, on a visit to the London School of Economics in November 2008, asked why economists had got it so wrong. Similar criticisms have emerged since the Brexit vote, with economic forecasters being accused of being excessively pessimistic about the outcome.
The accuracy of economic forecasts was one of the topics discussed by Andy Haldane, Chief Economist at the Bank of England. Speaking at the Institute for Government in London, he compared economic forecasting to weather forecasting (see section from 15’20” in the webcast):
“Remember that? Michael Fish getting up: ‘There’s no hurricane coming but it will be very windy in Spain.’ Very similar to the sort of reports central banks – naming no names – issued pre-crisis, ‘There is no hurricane coming but it might be very windy in the sub-prime sector.” (18’40”)
The problem with the standard economic models which were used for forecasting is that they were essentially equilibrium models which work reasonably well in ‘normal’ times. But when there is a large shock to the economic system, they work much less well. First, the shocks themselves are hard to predict. For example, the sub-prime crisis in 2007/8 was not foreseen by most economists.
Then there is the effect of the shocks. Large shocks are much harder to model as they can trigger strong reactions by consumers and firms, and governments too. These reactions are often hugely affected by sentiment. Bouts of pessimism or even panic can grip markets, as happened in late 2008 with the collapse of Lehman Brothers. Markets can tumble way beyond what would be expected by a calm adjustment to a shock.
It can work the other way too. Economists generally predicted that the Brexit vote would lead to a fall in GDP. However, despite a large depreciation of sterling, consumer sentiment held up better than was expected and the economy kept growing.
But is it fair to compare economic forecasting with weather forecasting? Weather forecasting is concerned with natural phenomena and only seeks to forecast with any accuracy a few days ahead. Economic forecasting, if used correctly, highlights the drivers of economic change, such as government policy or the Brexit vote, and their likely consequences, other things being equal. Given that economies are constantly being affected by economic shocks, including government or central bank actions, it is impossible to forecast the state of the macroeconomy with any accuracy.
This does not mean that forecasting is useless, as it can highlight the likely effects of policies and take into account the latest surveys of, say, consumer and business confidence. It can also give the most likely central forecast of the economy and the likely probabilities of variance from this central forecast. This is why many forecasts use ‘fan charts’: see, for example, Bank of England forecasts.
What economic forecasts cannot do is to predict the precise state of the economy in the future. However, they can be refined to take into account more realistic modelling, including the modelling of human behaviour, and more accurate data, including survey data. But, however refined they become, they can only ever give likely values for various economic variables or likely effects of policy measures.
Webcast
Andy Haldane in Conversation Institute for Government (5/1/17)
Articles
‘Michael Fish’ Comments From Andy Haldane Pounced Upon By Brexit Supporters Huffington Post, Chris York (6/1/17)
Crash was economists’ ‘Michael Fish’ moment, says Andy Haldane BBC News (6/1/17)
The Bank’s ‘Michael Fish’ moment BBC News, Kamal Ahmed (6/1/17)
Bank of England’s Haldane admits crisis in economic forecasting Financial Times, Chris Giles (6/1/17)
Chief economist of Bank of England admits errors in Brexit forecasting BBC News, Phillip Inman (5/1/17)
Economists have completely failed us. They’re no better than Mystic Meg The Guardian, Simon Jenkins (6/1/17)
Five things economists can do to regain trust The Guardian, Katie Allen and Phillip Inman (6/1/17)
Andy Haldane: Bank of England has not changed view on negative impact of Brexit Independent, Ben Chu (5/1/17)
Big data could help economists avoid any more embarrassing Michael Fish moments Independent, Hamish McRae (7/1/17)
Questions
- In what ways does economic forecasting differ from weather forecasting?
- How might economic forecasting be improved?
- To what extent were the warnings of the Bank of England made before the Brexit vote justified? Did such warnings take into account actions that the Bank of England was likely to take?
- How is the UK economy likely to perform over the coming months? What assumptions are you making here?
- Brexit hasn’t happened yet. Why is it extremely difficult to forecast today what the effects of actually leaving the EU will be on the UK economy once it has happened?
- If economic forecasting is difficult and often inaccurate, should it be abandoned?
- The Bank of England is forecasting that inflation will rise in the coming months. Discuss reasons why this forecast is likely to prove correct and reasons why it may prove incorrect.
- How could economic forecasters take the possibility of a Trump victory into account when making forecasts six months ago of the state of the global economy a year or two ahead?
- How might the use of big data transform economic forecasting?
We’ve considered Keynesian economics and policy in several blogs. For example, a year ago in the post, What would Keynes say?, we looked at two articles arguing for Keynesian expansionary polices. More recently, in the blogs, End of the era of liquidity traps? and A risky dose of Keynesianism at the heart of Trumponomics, we looked at whether Donald Trump’s proposed policies are more Keynesian than his predecessor’s and at the opportunities and risks of such policies.
The article below, Larry Elliott updates the story by asking what Keynes would recommend today if he were alive. It also links to two other articles which add to the story.
Elliott asks his imaginary Keynes, for his analysis of the financial crisis of 2008 and of what has happened since. Keynes, he argues, would explain the crisis in terms of excessive borrowing, both private and public, and asset price bubbles. The bubbles then burst and people cut back on spending to claw down their debts.
Keynes, says Elliott, would approve of the initial response to the crisis: expansionary monetary policy (both lower interest rates and then quantitative easing) backed up by expansionary fiscal policy in 2009. But expansionary fiscal policies were short lived. Instead, austerity fiscal policies were adopted in an attempt to reduce public-sector deficits and, ultimately, public-sector debt. This slowed down the recovery and meant that much of the monetary expansion went into inflating the prices of assets, such as housing and shares, rather than in financing higher investment.
He also asks his imaginary Keynes what he’d recommend as the way forward today. Keynes outlines three alternatives to the current austerity policies, each involving expansionary fiscal policy:
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Trump’s policies of tax cuts combined with some increase in infrastructure spending. The problems with this are that there would be too little of the public infrastructure spending that the US economy needs and that the stimulus would be poorly focused. |
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Government taking advantage of exceptionally low interest rates to borrow to invest in infrastructure. “Governments could do this without alarming the markets, Keynes says, if they followed his teachings and borrowed solely to invest.” |
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Use money created through quantitative easing to finance public-sector investment in infrastructure and housing. “Building homes with QE makes sense; inflating house prices with QE does not.” (See the blogs, A flawed model of monetary policy and Global warning). |
Increased government spending on infrastructure has been recommended by international organisations, such as the OECD and the IMF (see OECD goes public and The world economic outlook – as seen by the IMF). With the rise in populism and worries about low economic growth throughout much of the developed world, perhaps Keynesian fiscal policy will become more popular with governments.
Article
Keynesian economics: is it time for the theory to rise from the dead?, The Guardian, Larry Elliott (11/12/16)
Questions
- What are the main factors determining a country’s long-term rate of economic growth?
- What are the benefits and limitations of using fiscal policy to raise global economic growth?
- What are the benefits and limitations of using new money created by the central bank to fund infrastructure spending?
- Draw an AD/AS diagram to illustrate the effect of a successful programme of public-sector infrastructure projects on GDP and prices.
- Draw a Keynesian 45° line diagram to illustrate the effect of a successful programme of public-sector infrastructure projects on actual and potential GDP.
- Why might an individual country benefit more from a co-ordinated expansionary fiscal policy of all countries rather than being the only country to pursue such a policy?
- Compare the relative effectiveness of increased government investment in infrastructure and tax cuts as alterative forms of expansionary fiscal policy.
- What determines the size of the multiplier effect of such policies?
- What supply-side policies could the government adopt to back up monetary and fiscal policy? Are the there lessons here from the Japanese government’s ‘three arrows’?
Jim Slater, who has just died at the age of 86, was a tycoon of the 1970s, probably unknown to most reader of this blog. But his legacy lives on and many will question whether the actions of the banking sector and big business today is a reflection of the lessons that were not learnt 40 years ago.
Slater was a businessman: perhaps the businessman in the 1970s, building up a company that in today’s money and the height of its success, would have been worth billions. Buying and selling companies, asset stripping and investing created Slater Walker, which shot to success and then crumbled to failure, taking with it a bailout from the Bank of England of £110 million. You might look at that figure and compare it with the bail outs of more recent times and think – peanuts. But think about how prices have changed and convert £110 million into today’s money and that’s a hefty bail out. A key question is whether the willingness of the government and Bank of England to bail out key banks and financial sector businesses has encouraged the irresponsible lending that led to the credit crunch. Was there a moral hazard? Had Slater Walker been left to fail, would the world look a slightly different place?
Perhaps a little extreme, but I wonder, if we were to look back over the past 50 to 60 years, whether we would find other cases of key businesses being bailed out, which set a precedent for other companies to grow, without necessarily taking full responsibility for it. Jim Slater will certainly leave a legacy behind him .
Jim Slater and the warning from the 1970s that we ignored BBC News, Jonty Bloom (20/11/15)
Questions
- What is meant by asset stripping?
- If a company like Slater Walker had not been bailed out, do you think the economy would have suffered?
- If Slater Walker had been left to fail, would that have changed the business model of some of our largest banks and reduced the chance of a financial crisis 40 years later?
- Do you think the concept of moral hazard is relevant here?
Here are two thought-provoking articles from The Guardian. They look at macroeconomic policy failures and at the likely consequences.
In first article, Larry Elliott, the Guardian’s Economics Editor, argues that Keynesian expansionary fiscal and monetary policy by the USA has allowed it to achieve much more rapid recovery than Europe, which, by contrast, has chosen to follow fiscal austerity policies and only recently mildly expansionary monetary policy through a belated QE programme.
In the UK, the recovery has been more significant than in the eurozone because of the expansionary monetary policies pursued by the Bank of England in its quantitative easing programme. ‘And when it came to fiscal policy, George Osborne quietly abandoned his original deficit reduction targets when the deleterious impact of an over-aggressive austerity strategy became apparent.’
So, according to Larry Elliott, Europe should ease up on austerity and governments should invest more though increased borrowing.
‘This is textbook Keynesian stuff. Unemployment is high, which means businesses are reluctant to invest. The lack of investment means that demand for new loans is weak. The weakness of demand for loans means that driving down the cost of borrowing through QE will have little impact. Therefore, it is up to the state to break into the vicious circle by investing itself, something it can do cheaply and – because there are so many people unemployed and businesses working well below full capacity – without the risk of inflation.’
In the second article, Paul Mason, the Economics Editor at Channel 4 News, points to the large increases in both public- and private- sector debt since 2007, despite the recession. Such debt, he argues, is becoming unsustainable and hence the world could be on the cusp of another crash.
Mason quotes from the Bank for International Settlements Quarterly Review September 2015 – media briefing. In this briefing, Claudio Borio,
Head of the Monetary & Economic Department, argues that:
‘Since at least 2009, domestic vulnerabilities have developed in several emerging market economies (EMEs), including some of the largest, and to a lesser extent even in some advanced economies, notably commodity exporters. In particular, these countries have exhibited signs of a build-up of financial imbalances, in the form of outsize credit booms alongside strong increases in asset prices, especially property prices, supported by unusually easy global liquidity conditions. It is the coincidence of the reversal of these booms with external vulnerabilities that should be watched most closely.’
We have already seen a fall in commodity prices, reflecting the underlying lack of demand, and large fluctuations in stock markets. The Chinese economy is slowing markedly, as are several other EMEs, and Europe and Japan are struggling to recover, despite their QE programmes. The USA is no longer engaging in QE and there are growing worries about a US slowdown as growth in the rest of the world slows. Mason, quoting the BIS briefing, states that:
‘In short, as the BIS economists put it, this is “a world in which debt levels are too high, productivity growth too weak and financial risks too threatening”. It’s impossible to extrapolate from all this the date the crash will happen, or the form it will take. All we know is there is a mismatch between rising credit, falling growth, trade and prices, and a febrile financial market, which, at present, keeps switchback riding as money flows from one sector, or geographic region, to another.’
So should there be more expansionary policy, or should rising debt levels be reduced by tighter monetary policy? Read the articles and then consider the questions.
I told you so. Obama right and Europe wrong about way out of Great Recession The Guardian, Larry Elliott (1/11/15)
Apocalypse now: has the next giant financial crash already begun? The Guardian, Paul Mason (1/11/15)
Questions
- To what extent do the two articles (a) agree and (b) disagree?
- How might a neo-liberal economist reply to the argument that what is needed is more expansionary fiscal and monetary policies?
- What is the transmission mechanism whereby quantitative easing affects real output? Is it a reliable mechanism for policymakers?
- What would make a financial crash less likely? Is this something that governments or central banks can influence?
- Why has productivity growth been so low in many countries? What would increase it?
‘The world is sinking under a sea of debt, private as well as public, and it is increasingly hard to see how this might end, except in some form of mass default.’ So claims the article below by Jeremy Warner. But just how much has debt grown, both public and private? And is it of concern?
The doomsday scenario is that we are heading for another financial crisis as over leveraged banks and governments could not cope with a collapse in confidence. Bank and bond interest rates would soar and debts would be hard to finance. The world could head back into recession as credit became harder and more expensive to obtain. Perhaps, in such a scenario, there would be mass default, by banks and governments alike. This could result in a plunge back into recession.
The more optimistic scenario is that private-sector debt is under control and in many countries is falling (see, for example, chart 1 in the blog Looking once again through Minsky eyes at UK credit numbers for the case of the UK). Even though private-sector debt could rise again as the world economy grows, it would be affordable provided that interest rates remain low and banks continue to build the requisite capital buffers under the Basel III banking regulations.
As far as public-sector debt is concerned, as a percentage of GDP its growth has begun to decline in advanced countries as a whole and, although gently rising in developing and emerging economies as a whole, is relatively low compared with advanced countries (see chart). Of course, there are some countries that still face much larger debts, but in most cases they are manageable and governments have plans to curb them, or at least their growth.
But there have been several warnings from various economists and institutes, as we saw in the blog post, Has the problem of excess global debt been tackled? Not according to latest figures. The question is whether countries can grow their way out of the problem, with a rapidly rising denominator in the debt/GDP ratios.
Only mass default will end the world’s addiction to debt The Telegraph, Jeremy Warner (3/3/15)
Questions
- What would be the impact of several countries defaulting on debt?
- What factors determine the likelihood of sovereign defaults?
- What factors determine the likelihood of bank defaults?
- What is meant by ‘leverage’ in the context of (a) banks; (b) nations?
- What are the Basel III regulations? What impact will they have/are they having on bank leverage?
- Expand on the arguments supporting the doomsday scenario above.
- Expand on the arguments supporting the optimistic scenario above.
- What is the relationship between economic growth and debt?
- Explain how the explosion in global credit might merely be ‘the mirror image of rising output, asset prices and wealth’.
- Is domestic inflation a good answer for a country to the problems of rising debt denominated (a) in the domestic currency; (b) in foreign currencies?
