Induced hydraulic fracturing or “fracking”, is a technique used to make fractures in shale beds, normally deep underground, through the injection of liquids under high pressure. The idea is to release oil or gas. Fracking has transformed the oil industry by allowing vast reserves to be tapped.
Although the main ingredient of the fracking liquid is water, it is also necessary to include sand and a gelling agent to increase the viscosity of the liquid and bind in the sand. The commonest gelling agent is guar gum, a gel made from powdered guar seeds, which are grown in the semi-desert regions of India and Pakistan. Guar gum is also widely used in the food industry as a binding, thickening, texturising and moisture control agent.

With the rapid growth in fracking, especially in the USA, the demand for guar gum has rocketed – and so has its price. In just one year the price of guar beans, from which the seeds are extracted, has risen ten fold from about 30 rupees (about 34 pence) to around 300 rupees per kilo. This has transformed the lives of many poor farmers. Across the desert belt of north-west India, fields are being planted with guar.

But will it last? What will the oil and gas extraction companies do in response to the higher price? What will the food industry do? What will happen to the demand and supply of guar gum over the longer term? Is it risky for farmers in India and Pakistan to rely on a single crop, or should they take advantage of the high prices while they last? These types of questions are central to many mono-crop economies.
Webcast
The little green bean in big fracking demand CNN, Mallika Kapur (10/9/12)
Articles
Frackers in frantic search for guar bean substitutes Reuters, Braden Reddall (13/8/12)
After first-half surge, US drillers find respite in guar wars Reuters (20/7/12)
Guar Gum Exports From India to Drop on Halliburton Stocks BloombergBusinessweek, Prabhudatta Mishra (3/9/12)
Frackers Seek Guar Bean Substitutes The Ithaca Independent, Ed Sutherland (13/8/12)
Synthetic Fracking Ingredient to Replace Guar Bean Greener Ideas, Madison E. Rowe (15/8/12)
From emu farms to guar crops: Why the desert is fertile for Ponzi schemes The Economic Times of India, Vikram Doctor (10/9/12)
Guar gum replacer cuts cost by up to 40% Food Manufacture, Lorraine Mullaney (4/9/12)
Less Guar Needed: TIC Gums Introduces Ticaloid Lite Powder TIC Gums (27/8/12)
Immediate Supply of Guar Gum Available in the US PRLog (1/9/12)
Questions
- Why have guar bean, powder and gum prices risen so rapidly? Use a demand and supply diagram to illustrate your answer.
- How is the price elasticity of supply of guar likely to differ between the short term and the long term? What will be the implications of this for guar prices and the livelihood of guar growers?
- How is the price elasticity of demand for guar likely to differ between the short term and the long term? What will be the implications of this for guar prices and the livelihood of guar growers?
- What would you advise guar growers to do and why?
- What is the role of speculation in determining the price of guar?
- What is a ‘ponzi scheme’? Why is the ‘desert so fertile for ponzi schemes’? (Note that the symbol for a rupee is Rs or ₹, that 100,000 rupees are referred to as 1 Lakh and that 100 Lakh are referred to as 1 Crore.)
Many of you reading this will be embarking on an economics degree. During your studies you’ll be developing the skills that economists bring to observing and analysing the world around us and considering the policy options to achieve various social and economic objectives. You’ll be learning how to become an ‘economic detective’ and to do ‘forensic economics’.
Identifying the nature of economic problems; collecting and examining the evidence; using the economist’s ‘toolkit’ of concepts and ideas to make sense of the evidence; looking for explanations; constructing hypotheses and theories; considering what can be done to tackle the problems and prevent them occurring in the future – these are the sorts of things you will be doing; and they involve detective work.
The podcast below looks at the methods of Sherlock Holmes. These are the sorts of methods successful economists use. John Gray identifies three types of reasoning. The first two are probably familiar to you, or soon will be.
1. Induction involves looking at evidence and then using it to construct general theories. So, for example, if you observe on many occasions that when the prices of various goods rise, the quantity demanded falls, you can then hypothesise that whenever the price of a good rises, the quantity demanded will fall; in other words, you induce that price and quantity demanded are inversely related – that demand curves are downward sloping. This is known as the ‘Law of demand’. Induction, of course, is only as good as the evidence. Nevertheless, inductive methods are logical and it can be demonstrated how the theories follow from the evidence.
2. Deduction involves using theories to draw conclusions about specific cases. So, for example, you could use the law of demand to deduce that when the price of a specific good rises, the quantity demanded of that good will fall. You would also assume that nothing else had changed that could influence the demand for the good. In other words, you assume ‘ceteris paribus‘ or ‘other things being equal’. As long as you have not made any logical errors, deduction is foolproof. As John Gray puts it:
Deduction is infallible as long as the premises are true, while induction yields probabilities that can always be falsified by events
But there is a third type of reasoning and this is where the true economic detective comes in. This is known as ‘abduction’. This is the type of logic that is used when evidence is thin or where there are lots of scraps of seemingly contradictory evidence. And this is the type of logic employed so successfully by Sherlock Holmes.
3. Abduction involves making informed guesses or estimates from limited evidence. It is using the scraps of evidence as clues as to what might be really going on. It is how many initial hypotheses are formed. Then the researcher (or detective) will use the clues to search for more evidence that can be used for induction that will yield a more robust theory. The clues may lead to a false trail, but sometimes they may allow the researcher to develop a new theory or amend an existing one. A good researcher will be alert to clues; to seeing patterns in details that might previously have been dismissed or gone unnoticed.
Before the banking crisis of 2007/8 and the subsequent credit crunch and recession in the developed world, many economists were picking up clues and trying to use them to develop a theory of systemic risk in financial markets. They were using the skills of an economic detective to try to discover not only what was currently going on but also what might be the consequences for the future. Some used abduction successfully to predict the impending crisis; most did not.
If you are embarking on an economics degree and will possibly go on to a career as an economist, then part of your training will be as a detective. With good detective skills – looking for clues, seeing connections, identifying what more evidence is required and where to find it, and then using it to provide explanations and policy prescriptions – you could make a very successful and sought-after economist. Being a good economist is not just about learning theories and techniques, although this is vitally important; it’s also about being imaginative and thinking ‘outside the box’. Good luck!
Podcast
Sherlock Holmes and the Romance of Reason BBC: A Point of View, John Gray (17/8/12) (Click here for a transcript.)
Articles and information
Detective work: forensic economics Business:Life, Tim Harford (2/5/12)
The Search for 100 Million Missing Women Slate, Stephen J. Dubner and Steven D. Levitt (24/5/05)
Abduction Stanford Encyclopedia of Philosophy, Igor Douven (9/2/11)
Abductive reasoning Wikipedia
Questions
- Explain the difference between induction and abduction.
- Identify the various ‘threshold concepts’ in economics. Does an understanding of these concepts help an economist do better detective work?
- How might forensic economics be used for crime fighting?
- Why might elegant and sophisticated economic theory be dangerous in the ‘messy’ and statistically ‘noisy’ real world?
- In trying to establish an explanation for “100 Million Missing Women”, what use was made of abduction, induction and deduction?
Trade union action has been a feature of the British labour market over the past few years, as discussed in this first and second blog. With the government’s austerity measures still in place and ongoing issues over pension provision, there are many explosive issues that will undoubtedly be discussed at this year’s TUC Conference in Brighton.
We have already heard from numerous unions that strike action over the coming year is ‘inevitable’. With rising prices, static or even falling wages, reduced pension provision and increased contributions, the cost of living has become increasingly unaffordable for many members of the trade unions. Dave Prentis, the General Secretary of Unison said:
‘I think people have been pushed into a corner. They are moving into poverty … The threat is that if we can’t move forward in negotiations to find a way through it then we will move to industrial action. There is no doubt whatsoever that we can create disputes throughout next year.’
Although few would argue against the notion that the government’s finances are in a dire state and spending cuts together with tax rises are needed, the controversy seems to lie in exactly when these cuts should take place and how severe they should be. For many, cutting government spending and raising taxes whilst the economy is still in recession is asking for trouble. For others, it’s the right thing to do and everyone should play a part in helping to return government finances to a semblance of balance. The Labour government has traditionally supported trade unions, but even their leadership backed the government’s plan for pay restraint for public sector workers. This, together with the continuing debates over public sector pensions has clearly angered many public sector workers, thus creating this ‘inevitable’ industrial action over the coming year.
Unison and GMB have said that they will be working together in order to try to better pay and conditions for its members, by co-ordinating public-sector strikes around Spring next year. Co-ordinated strikes across a variety of sectors could create havoc for the economy. Not just disruption for the everyday person, but losses for businesses and the economy. A general strike has not taken place since 1926, but it is thought that TUC delegates will be voting on whether or not one should be planned. So, when faced with these inevitable strikes, should the government back down and cut back on austerity or stand up to them and suffer the disruption of a strike, whilst continuing on with bringing its budget back on track? The following articles look at the TUC Congress and the proposed strike action.
Public sector unions plan Spring strikes Guardian, Dan Milmo (9/9/12)
Trade union warns of further strikes Financial Times, Brian Groom (7/9/12)
Trade union officials gather for TUC Congress in Brighton BBC News, John Moylan (9/9/12)
Unite union leader warns of wave of public sector strikes Guardian, Dan Milmo (7/9/12)
Unison and GMB unions planning co-ordinated strikes over pay BBC News, Justin Parkinson (9/9/12)
TUC Conference 2012: a mixture of new and old Channel 4 News (9/9/12)
Government must stand up to these TUC bully tactics Express, Leo McKinstry (9/9/12)
Questions
- What is the purpose of a trade union?
- What is the difference between individual and collective bargaining? Why is collective bargaining likely to be more successful in achieving certain aims?
- If there is co-ordinated strike action, what are the likely costs for (a) the workers on strike (b) the non-striking workers (c) businesses and (d) the economy?
- What are the main issues being debated between unions and the government?
- Explain the economic reasoning behind Dave Prentis’ statement that people are being moved into poverty.
- Do you agree with strike action? Do you think it has any effect?
- When do you think is the right time to implement austerity measures? Has the government got it right? As always, make sure you explain your answer!!
When crude oil prices go up, the prices of petrol and diesel go up pretty well straight away and by the full amount, or more, of the crude price rise. When crude prices go down, however, road fuel prices are often slow to fall; and when they do, the fall is less than the full fall in crude prices.
Click on charts below for a larger version. Click here for a PowerPoint of the left-hand chart.
In response to complaints of motorists and haulage companies, the Office of Fair Trading has announced that it will investigate the link between crude prices and prices at the pump. It will report in January 2013.


The review will consider questions of competition and market power. In particular, it will look at the power of the oil companies in determining the wholesale price of road fuel.
It will also examine the retail fuel sector and whether supermarkets are driving out independent retailers. The claim of many independent petrol stations is that supermarkets are selling below cost as a lost leader to encourage people to shop in their stores. They also claim that supermarkets use their buying power to obtain fuel more cheaply.
What is more, most of the petrol stations that are not part of supermarkets are owned by the oil companies. Again, independents claim that oil companies supply fuel more cheaply to their own stations than to independents.
As a result of what many independents see as unfair competition, many are driven out of business. Today there some 9000 petrol stations in the UK; 20 years ago there were twice as many.
The following articles look at the remit of the OFT investigation and at the competition issues in the road fuel market.
Articles
Formal inquiry tries to ease motorist pain at the pumps ITV News, Laura Kuenssberg (5/9/12)
OFT to scrutinise retail petrol market Financial Times, Caroline Binham (5/9/12)
OFT launches probe into pump prices Channel 4 News (5/9/12)
Petrol and diesel prices: Office of Fair Trading launches competition inquiry Guardian, Terry Macalister (5/9/12)
Petrol and diesel price review is launched by OFT BBC News (5/9/12)
Are supermarkets to blame for the devastation of independent petrol retailers by deliberately selling at a loss? This is Money, Tom Mcghie and Neil Craven (8/9/12)
OFT petrol pricing probe welcomed The Grocer, Beth Phillips (7/9/12)
Private businesses welcome OFT’s fuel price investigation Talking Retail (6/9/12)
10 charges that make consumers scratch their heads BBC News Magazine, Lucy Townsend (6/9/12)
Data
Crude Oil Price Index Index Mundi
Daily Brent Crude Spot Price, 1987 to present day US Energy Information Administration
Current UK Petrol Pump Prices What Pric£?
Fuel Prices WhatGas.com
Questions
- Describe the structure of the road fuel market, from oil production through to the retailing of petrol and diesel.
- What is meant by the terms ‘monosony’ and ‘oligopsony’? Which companies in the road fuel market have significant monopsony/oligopsony power?
- What determines the price elasticity of demand for road fuel in (a) the short run; (b) the long run? What implications does this have for the value of the short-run and long-run price elasticities?
- Where is the abuse of market power likely to occour in the road fuel market?
- To what extent is it in the consumers’ interests for supermarkets to sell road fuel below average cost?
- Examine the data for pump prices and crude oil prices and establish whether there is any truth in the claim that pump prices adjust rapidly to a rise in crude prices and slowly to a fall in crude prices.
For some people, a pint of beer is a regular thing each week. Add all your pints of beer together, then add your friend’s pints, their friends’ pints and … you get the idea. Once you’ve done that for the entire population, you have an estimate of total beer consumption in the UK. This can then be compared with total consumption of beer in other countries and between continents.
Prior to 2007, Europe and the Americas were the biggest beer drinking continents, but since then, Asia has emerged as the leader of pints of beer consumed, drinking 67bn litres of beer compared with the Americas’ 57bn and Europe’s 51bn in 2011. In per capita terms, Asia is still some way off, with Japan leading the way as the highest Asian country in 41st place, consuming 64 litres of beer per year per capita of the population. So how is this relevant to economics and business?
Consumption of anything provides jobs – bar workers, manufacturers and in the case of beer, probably law enforcement! It probably also increases utility – after all, why consume it if it’s not going to give you some degree of satisfaction!
We can analyse the demand for beer and see how it varies with changes in price and income. Minimum prices for alcohol have been proposed as a means of reducing consumption, and tax and excise duties are always linked to alcoholic beverages and clearly have an effect on demand. In this case, however, we can also consider the emergence of Asia and how tastes have changed. It is the fastest growing beer market in the world; so what can we deduce from that? As the BBC News article states, it is ‘a sign of a young, upwardly mobile, and increasingly hedonistic population.’
Experts also say that the increased consumption of beer in Asian countries is closely correlated with growing incomes and prosperity. A consumer research analyst from Standard Chartered, Nirgunan Tiruchelvam, said:
“Beer has a clearer correlation with strong economic growth … People tend to drink beer in times of growth. They drink spirits when times are good and when times are bad.”
Data suggest that when a certain level of prosperity is reached in a nation, beer sales begin to rise. As many Asian economies begin to develop rapidly, beer sales have taken off. This could be regarded as a good thing for Europe. With stagnant Western economies, beer producers within Europe may be grateful for a growing demand in Asia. Indeed, many of the world’s biggest breweries are expanding rapidly, providing jobs and income. Consumers in Europe will also be happy to see that beer production remains profitable in other parts of the world. With unemployment still high and recession ongoing, a pint of beer will be a much needed pick-me-up for many people. At least, that’s what the evidence from the Great Depression of the 1930s suggested!!
It’s not good news for everyone, however. Beer production has also increased in Asian countries, most notably in China, which now leads the world as the largest beer producer. This clearly reduces the export potential for European beer producers.
Also, many argue that the growing consumption of beer in Asia is simply an illustration of growing Western influence and it is likely to create severe medical problems in the future. Binge drinking and under-age consumption is already a big problem in Western countries and this could soon begin to extend across the world. The following articles consider the growth in consumption of beer.
Brewers thirsty for expansion as taste for beer grows in emerging markets Guardian, Simon Neville (3/9/12)
Beer in Asia: the drink of economic growth BBC News, Saira Syed (6/9/12)
Study says world beer production hits new high Long Island Business News, Associated Press (8/8/12)
Global beer sales go up for 27th year running News Track India (9/8/12)
Questions
- Use a supply and demand diagram to analyse recent trends in beer consumption across the world.
- Which factors have caused demand in emerging markets to increase? Based on your answer to the previous question, how might that have affected equilibrium prices?
- How has growth in beer consumption throughout Asia benefited Western producers?
- What would you expect the price and income elasticities of demand to be for a product such as beer? Explain your answer.
- To what extent do you think this trend in beer production is a sign of globalisation?
- Evaluate the extent to which the growth in consumption and production of beer in Asia is a good thing. You should consider everyone who and everything might be affected!