Business leaders and politicians pay a great deal of attention to economic forecasts. And yet these forecasts often turn out to be quite wrong. Very few economists predicted the banking crisis of 2008 and the subsequent credit crunch and recession. And the recently released 2010 Q4 growth figures for the UK economy, which showed a decline in real GDP of 0.5%, took most people by surprise.
What is more, forecasters often disagree. If, for example, you look at the forecasts made by various panel members for Consensus Forecasts, you can see the divergence between their various predictions.
So why is economic forecasting so unreliable? Is it the fault of economic models? Or are there too many unpredictable factors that can impact on economies – factors such as business and consumer confidence, or political events, or natural disasters, such as the recent floods in Australia, South Africa and Brazil? Will economic forecasting always be a very inexact science?
Articles
Davos 2011: Why do economists get it so wrong? BBC News, Tim Weber (27/1/11)
Popular Semi-Science Slate, Robert J. Shiller (24/1/11)
Fed Often Gets It Wrong In Its Forecasts on US Economy American Public Media, Justin Wolfers (26/1/11)
Don’t bet on economic forecasting CNBC, Jeff Cox (21/9/10)
Forecasts
Forecasts for the UK economy HM Treasury
Econ Stats: The Economic Statistics and Indicators Database Economy Watch (large database of worldwide annual statistics, including forecasts to 2015)
World Economic Outlook IMF (follow link in right-hand panel)
OECD Economic Outlook: Statistical Annex OECD
European Economic Forecasts European Commission, Economic and Financial Affairs DG
Questions
- For what reasons may economic forecasts turn out to be wrong?.
- To what extent is economic forecasting like weather forecasting? Which is harder and why?
- Wo what extent can the poor accuracy of economic forecasts be blamed on the application of the ‘wrong type of economics’?
- How much variation is there in the independent forecasts of the UK economy reported by the Treasury (see HM Treasury link above)?
- Using the HM Treasury link, compare the forecasts made of 2010 in January 2010 with those made of 2010 in January 2011. Attempt an explanation of the differences.
It is widely acknowledged that the supply of oil and gas will eventually run out. As these resources are depleted, prices will inevitably rise. However, with heating and energy bills at extremely high levels, a new ‘resource’ in Sweden has been used to heat buildings: Body Heat!
Hundreds of thousands of people pass through Stockholm Central Station every day and rather than letting the body heat these people generate go to waste, a Swedish firm, Jernhusen, is now ‘collecting’ their heat, converting it into hot water and then using this as a new heating resource. Klass Johnasson, one of the creators of the system said:
This is old technology being used in a new way. The only difference here is that we’ve shifted energy between two different buildings.
The Swedish firm has found that the system is not only environmentally friendly, but it is also good business practice, as it has reduced the energy costs of the block by some 25%, which, during a recession and with high energy prices, is no small thing!
The costs and benefits of such a system will inevitably vary from country to country, but in Sweden’s case, it is a viable method of heating, given their high energy prices and low winter temperatures. They are not stealing the heat from anyone, but are simply converting the excess heat that is already there. Obviously, the fact that the firm owns the station, and also the land between the station and their building, is helpful in ‘transferring’ the energy, but the firm argues that even if this wasn’t the case, it’s nothing co-operation wouldn’t solve. Is this the future of low-cost and low-carbon heating?
Harvesting energy: body heat to warm buildings BBC News, Xanthe Hinchey (9/1/11)
How Sweden turns human body heat into useful energy BBC News (19/4/10)
Passengers passing by Stockholm Central Station reduce 25% of used heating energy The Green Optimistic, Mihai Sandru (12/1/11)
Body heat: the new energy source ecPulse (11/1/11)
Questions
- Think about how we define abundance. Is body heat an abundant resource?
- Why are energy and oil prices so high? How does scarcity affect their price?
- Could this source of heating be described as a market failure? If so, how could we illustrate this on a diagram?
- Consider the Swedish firm’s profit-maximising price and output. The new heating method is said to reduce their costs – will it affect their average and/or marginal costs? Show the impact on a diagram. What happens to the firm’s profits?
- Is this heating method something other firms could benefit from? How could they decide whether it is cost-effective?
- Is there a role for the government to encourage more firms to use this method? Explain your answer.
This week, we have seen some major potential changes in the UK’s welfare state. One key change involves child benefit. (see Who won’t benefit from child benefit?) However, a more recent development stems from a problem that has built up over a number of years and is not just peculiar to the UK: Pensions.
As technology advances and medical procedures improve, there has been a general increase in life expectancy for both men and women across the world. People are living for longer and longer and hence pensioners can be in retirement for over 30 years. This is over double the retirement time we used to see decades ago. Therefore, pensioners are eligible to receive their state pension or their private pension for much longer and hence the cost is becoming unsustainable.
Lord Hutton has led a review into public sector pension schemes and has concluded that public sector workers should be paying higher contributions. Lord Hutton has said that employees should be working for longer and hence retiring later. This would increase their contributions throughout their lives and also reduce the time period over which they receive a pension, hence cutting costs. There was also a recommendation that ‘final-salary pension schemes should be scrapped and changed to so-called ‘career-average’ schemes. The final-salary scheme benefits high earners and not those who make gradual progression up the career ladder. This possible change should certainly reduce the pension you are eligible to receive and hence should positively affect the sustainability of pension provision in the UK.
However, public sector workers who may face higher contributions and have already, in some cases, faced pay cuts or pay freezes, are unsurprisingly upset. They argue that accepting work in the public sector means accepting a lower wage than they could achieve in the private sector. The compensation, they argue, is the reward of a higher pension, which could be about to change. However, the independent review has found that the contributions made by the public sector do not reflect the true cost of the benefit they receive in their pension. This is likely to be a contentious issue for some time to come. Below are some articles considering this, but keep a look out for further developments.
Articles
Public sector pensions report explained BBC News (7/10/10)
Public sector pensions review: Q&A Telegraph (9/10/10)
Pensions reforms to focus on high earners Independent, Simon Read (9/10/10)
Why Lord Hutton could make public pensions bills bigger … not smaller Financial News, Mark Cobley and William Hutchings (8/10/10)
Lord Hutton: I busted the myth that public sector pensions are gold-plated Telegraph, Lord Hutton (8/10/10)
Key points of UK public sector pension review Reuters (8/10/10)
Public pensions review recommends higher contributions BBC News (7/10/10)
Public sector workers paying ‘less tax’ due to generous pension rules Telegraph, Myra Butterworth (8/10/10)
Asda closes final salary pension scheme Telegraph, Jamie Dunkley (9/10/10)
Hutton report: he’s no friend of gold-plated pensioners Guardian, Patrick Collinson (9/10/10)
Asda to close final salary pension scheme BBC News (8/10/10)
Lord Hutton: what the pension revolution means for public servants Telegraph, Emma Simon (8/10/10)
Report
Independent Public Service Pensions Commission: Interim Report Pensions Commission, Lord Hutton October 2010
Questions
- What is the purpose of a pension? Think about the idea of redistribution.
- Why should average-career pension schemes be less costly than final-salary pension schemes? Which is the most equitable arrangement?
- What are the key problems that have led to the pensions problem in the UK?
- What are the main recommendations of the independent pension review?
- How is opportunity cost relevant to problem of pensions provision?
- Is it fair that public sector workers should pay higher contributions towards their pensions?
- The BBC News article, Public sector review recommends higher contributions states that: “The recent decision to uprate pensions in line with the consumer prices index (CPI) rather than the retail prices index (RPI) has shaved 15% from the cost of the schemes.” Explain why this is the case?
If we are faced with simple and limited choices, we may make careful decisions based on a number of criteria: in other words, we will identify various characterisitics we are looking for and see how well the various alternative products or activities meet our criteria. When we have lots of choice, however, we may be less careful or get confused.
In this Guardian podcast, the panelists discuss complex choices between many products and/or characteristics. Are people being ‘rational’ when making such choices? Is being less careful simply a rational use of scarce time? Do people really want lots of choice or would they prefer more limited choice? Can experiments where people are given choices help us to understand how people choose and how much choice businesses or government should give people? Then there is the question of producers/suppliers of products. Does choice promote competition and product development and is there an optimum amount of choice to achieve this?
The Business: Choice Guardian Podcasts, Sheena Iyengar, Julian Glover and Andrew Lilico in conversation with Aditya Chakrabortty (1/9/10)
Questions
- Are people ‘rational’ when they make choices? For what reasons may they not be rational?
- Can you make rational choices if your information is imperfect?
- Is there an optimum amount of choice and how would you set about establishing that optimum?
- How useful are experiments in understanding the process of choice? What are the weaknesses of such experiments?
- Should people be limited in the amount of choice they are given over medical treatment and schools?
- What are the advantages to other people of giving people more choice?
- How much does culture influence our attitudes towards choice?
Transport issues in the UK are always newsworthy topics, whether it is train delays, cancelled flights, the quality and frequency of service or damage to the environment. Here’s another one that’s been around for some time – high-speed rail-links. Countries such as France and Germany have had high-speed rail links for years, but the UK has lagged behind. Could this be about to change?
The proposal is for a £30bn 250mph high-speed rail link between London and Birmingham, with the possibility of a future extension to Northern England and Scotland. This idea has been on the cards for some years and there remains political disagreement about the routes, the funding and the environmental impact. Undoubtedly, such a rail-link would provide significant benefits: opening up job opportunities to more people; reducing the time taken to commute and hence reducing the opportunity cost of living further away from work. It could also affect house prices. Despite the economic advantages of such a development, there are also countless problems, not least to those who would be forced to leave their homes.
People in the surrounding areas would suffer from noise pollution and their views of the countryside would be changed to a view of a train line, with trains appearing several times an hour at peak times and travelling at about 250mph. Furthermore, those who will be the most adversely affected are unlikely to reap the benefits. Perhaps the residents of the Chilterns would be appeased if they were to benefit from a quicker journey to work, but the rail-link will not stop in their village. In fact, it’s unlikely that they would ever need to use it. There are significant external costs to both the residents in the affected areas and to the environment and these must be considered alongside the potential benefits to individuals, firms and the economy. Given the much needed cuts in public spending and the cost of such an investment, it will be interesting to see how this story develops over the next 10 years.
Podcasts and videos
£30bn high-speed rail plans unveiled Guardian, Jon Dennis (12/3/10)
Can we afford a ticket on new London-Birmingham rail line? Daily Politics (11/3/10)
All aboard? Parties disagree over high-speed rail route BBC Newsnight (11/3/10)
Articles
The opportunities and challenges of high speed rail BBC News, David Miller (11/3/10)
Beauty of Chilterns may be put at risk by fast rail link, say critics Guardian, Peter Walker (11/3/10)
High-speed rail is the right investment for Britain’s future Independent (12/3/10)
Hundreds of homes will go for new high-speed rail line Telegraph, David Milward (12/3/10)
Questions
- Make a list of the private costs and benefits of a high-speed rail link.
- Now, think about the external costs and benefits. Try using this to conduct a Cost-Benefit Analysis. Think about the likelihood of each cost/benefit arising and when it will arise. What discount factor will you use?
- There are likely to be various external costs to the residents of the Chilterns. Illustrate this concept on a diagram. Why does this represent a market failure?
- How would you propose compensating the residents of the Chilterns? Are there any problems with your proposal?
- Will such a rail link benefit everyone? How are the concepts of Pareto efficiency and opportunity cost relevant here?
- To what extent would this rail link solve the transport problems we face in the UK. Think about the impact on congestion.