The ends and means of public policy

This is one of the penultimate drafts of my chapter in a volume forthcoming with Routledge, Fabian, M. and Breunig, R. (eds.), "Hybrid Public Policy Innovations: Contemporary Policy Beyond Ideology". 



How to appropriately balance the state and the market in public policy was arguably the defining question of the 20th century. The Western experiment with communism ended symbolically with the fall of the Berlin Wall in 1989. By that stage, public policy in the capitalist countries had grown quite sophisticated, and was much more than unchecked free markets. Notably, many of the liberal economies of the West had extensive welfare states with public health, education, transport and social security. These ‘social wages’ could be paid in large part because the use of markets to efficiently allocate resources to their most productive use in these economies had the led to the accumulation of significant wealth that could be redistributed by government. Liberal-democratic and social-democratic institutions ensured that this wealth was actually redistributed, or at least provided an avenue for protest when it wasn’t. Citizens of these societies could have their cake and it eat it too—they could enjoy both the private wealth of a market system and the social protections of a socialist one.

The success of these economies derived in no small part from the application of an analytical framework for thinking about public policy that had been hashed out in the halls of universities over the course of the 20th century. Economics was ascendant in this discourse, building on earlier work in political and social theory, extending it into the economic realm and formalising it into mechanistic tools of analysis. This chapter is an introduction to that framework. It explains in broad terms the strengths and weaknesses of markets, states and communities for ensuring an efficient and equitable allocation of resources in society. In many ways, it is an introduction to the economic way of thinking, but the student of politics, sociology or any other social science should recognise the influence of their own discipline.

Some are starting to question whether the framework outlined in this chapter has outlived its usefulness, at least as far as the advanced economies of the developed world are concerned (For example, Quiggin 2012). The framework is arguably struggling to meet the challenge of climate change, reap the full benefits of new technologies, and provide enough succour and security to citizens to prevent the re-emergence of xenophobia and nationalism. This may well be the case, but it is nonetheless important to be familiar with this paradigm if one wants to get to grips with modern policymaking. The question of ‘where to next’ is taken up somewhat by chapter 14 in this volume.

1.     Efficiency as a criterion for good public policy

Public policy is substantially a question of how to allocate scarce resources in the context of imperfect information, limited power, competing claims and essentially unlimited wants, in order to maximise social welfare. Opportunity cost—the cost of forgone alternatives—is omnipresent in public policy. There are many things a society would like to do, like fund free tertiary education and a world-class defence force, but inevitably we have to choose only a subset of these things because we have a limited pool of resources. How are we to choose between policy options? In this context of scarce resources, efficiency is a relevant criterion for deciding allocations. If resources are scarce, then we don’t want to be wasteful with them. If we allocate our resources efficiently, then we get maximum bang for each buck, which minimises opportunity costs, ensuring the maximisation of welfare.

Classical microeconomics is essentially the study of how to efficiently allocate scarce resources so as to maximise welfare (Sowell 2007). However, before taking a single step further, it is important to emphasise that economics does not explicitly value efficiency (Samuels 1988, Weston 1994). Economics is not normative (or at least tries not to be). It endeavours to model the allocation of resources to show how efficiency can be obtained and what the trade-offs are if society values something else instead, like equity. Some economists certainly value efficiency and will trade-off other things in order to maximise it. But these individual economists should not be mistaken for the economic paradigm or the profession as a whole.

Economics links efficiency and welfare through the concept of Pareto-efficiency. A Pareto-efficient outcome is one where nobody can be made better off without making someone else worse off. Pareto efficient outcomes need not be equitable. An early step in public policy design is to identify any Pareto improvements that can be made. These are welfare enhancing without hurting anyone, and thus win-win. A subsequent step is to identity any so-called ‘potential’ Pareto improvements. These are cases where some group can be made so much better-off that they can compensate those made worse-off by the change such that the end result is still a net improvement in social welfare. These are so-called ‘positive sum’, and such efficiency is sometimes called Hicks-Kaldor efficiency.[1]

1.1.Markets as efficient allocators of scarce resources

Efficiently allocating scarce resources is an extremely difficult task for policymakers because they lack the requisite information (Hayek 1945). Consider the case of tractors. In a centrally-planned economy, the government decides the means of tractor production, the price of those tractors and the quantity that is produced. How is the government to know how many tractors people want? If they produce too many, the surplus will sit idle. The inputs to production used to make those surplus tractors could also have been used to produce something else, like cars. Furthermore, there are hundreds of inputs that go into a tractor—rubber for the tyres, copper for the electronics, steel for the chassis etcetera—all of which involve design decisions, ongoing technological improvement and their own supply chain. It is a monumental task for a bureaucracy to manage the production of these inputs and coordinate their interconnected supply chains as they come together to make a tractor.
Markets are relatively more efficient at managing this allocation of resources than the state apparatus because they can tap into a lot more information through the price mechanism. Prices simultaneously communicate demand and supply, which reflect the utility people gain from consuming certain goods relative to others and the cost of producing those goods relative to others respectively. In order to understand how prices achieve this and how this results in welfare maximisation, we will need to take a brief look at some basic principles of economics.

The primary concept in economics is utility (Bruni & Sugden 2007). Individual agents attempt to maximise their utility by consuming subject to their budget constraint. Goods are typically traditional consumables like food, dishwashers and holidays, but the concept can be extended to more ephemeral goods like leisure and family time. The key thing is that constraints, whether financial or temporal, mean that people necessarily make trade-offs, and rational actors will trade-off such that they get as much utility as possible.

What is utility? Economists don’t engage with this question. It’s just a vague positive (+) while disutility is a negative (-).Utility is not happiness or wellbeing or anything descriptive like that. As soon as you try to define it you start to make value-judgements, and economists want to avoid that. We can’t measure utility, so attempting to predict behaviour based on the power of feelings is a dead-end (Robbins 1938). Instead, economists infer from individuals’ behaviour that they must have expected their choices to result in more utility than some alternate course of action. This is called revealed preferences. This approach to utility maximisation does not require computing precise quantities of utility, but rather a rank-ordering of preferences, for example, apples over oranges over pears.   

Individuals communicate their preferences to producers of goods in the form of demand for certain goods, which manifests as ‘willingness to pay’. This willingness is derived from the trade-offs individuals make across goods when subject to their budget constraint. For example, I am willing to pay $3 for an apple, but only if oranges cost $4 and only if I don’t already have 3 apples, at which point I start to be more interested in getting an orange than a fourth apple. Producers compare their cost base (which determines their ‘willingness to accept’) to consumers’ willingness to pay to determine how much profit they can make selling a particular good. Private producers will not produce a good in the long run unless they can make a profit, and they will produce the goods that are the most profitable. Profit is the difference between the price received for output and the costs associated with producing that output. As such, profit-maximising producers will seek to produce the most desired and thus highest-priced good at the lowest possible cost. Their profit-maximising behaviour forms the supply side of the market.

Supply and demand find their equilibrium at the market clearing price. At this point, the price of a good ensures a quantity of it is produced that balances the utility people get from consuming it with the costs involved in producing it, all relative to other goods. The last consumer to enter the market derives close to zero net benefit from the good because their willingness to pay for it is almost exactly its price, but still gets more utility from this good than any other they could consume. And the last firm to enter the industry—the marginal firm—turns close to zero profits, but couldn’t get more profit in a different industry given its production technology. Thus, no further demand or supply is attracted to the sector and we can say that the market has cleared.

Markets are sometimes described as having a rationing and allocative function. The rationing function channels goods to the consumer who is most willing to pay for those goods, which has an element of fairness to it (provided that everyone has capacity to pay for the good). The allocative function channels inputs to producers who can most productively use those inputs to produce goods, thereby maximising society’s output.  

Markets also have a creative function. The profit motive incentivises competition amongst firms for custom, which spurs innovation and ongoing cost reductions (Smith 1776, Schumpeter 1942). Firms make larger profits when they secure a larger market share, and they secure market share by providing a higher quality good at a lower price than their competitors. They achieve this by streamlining their management practices, improving their production technology and attracting the most talented workers. If they don’t constantly improve their systems then their advantages over their rivals will gradually be eroded along with their profits until they become a loss-making enterprise and are forced out of the industry, releasing their resources to more productive firms. Competition thus drives ongoing increases in productivity, which is our ability to create more with less. Productivity is what makes us materially richer as a society. In the absence of competition, the impetus for firms to improve their productivity is significantly diminished, and productivity growth declines, as it has in all centrally planned economies to date.

The reason why markets are described as ‘welfare maximising’ is because they produce what people want at least cost and drive reductions in this cost over time. A classical utilitarian might see this outcome as a just one because as much utility as possible is generated. Moreover, the people who most want a good get it but also pay the most for it. These two points—welfare maximisation and willingness to pay—are the basis of the ethical principle of ‘market justice’ (Hayek 1978). One advantage of this doctrine is that it avoids engaging with what goods ought to be produced, leaving such decisions up to individual preferences. A hole in the theory is that it assumes that everyone has an equal capacity to pay for any particular good, which is unlikely for all but the most basic of goods in a free market economy.

1.2. Market distortions

The ability of markets to efficiently allocate scarce resources is undermined by interventions that distort the prices operating in those markets. Many regulations have this effect, notably subsidies, price floors and price ceilings (Von Mises 1940; see Bhagwati & Panagariya 2012 for a practical discussion in the Indian context). These include distortions of the wage and interest rate, which are the price of labour and capital respectively. In all cases, price distortions lead to information signals that do not reflect the true social cost and benefit of an activity. For example, if you subsidise water for farmers, this encourages them to use water-intensive farming technologies and grow water-intensive products because water is artificially cheap (Roodman & Peterson 1996). This does benefit the farmers and people who want to consume water-intensive crops. However, from a society-wide, utility maximising point of view, there are likely more efficient ways of allocating the water resources available.

In general, while price controls might seem useful for equity reasons in many cases, the efficiency costs typically outweigh the equity benefits. A post- or pre-market intervention may be able to improve equity without so dramatically undermining the efficiency of the market. For example, simply transferring money to the farmers to spend as they wish would see them allocate that capital towards the most efficient production technologies in the context of the true cost of water (Jha et al. 2013). The financial benefit to the farmers is the same, but it is attained without the misallocation of water resources. This idea of using markets for efficiency and operating around the market to achieve equity is a major theme of this volume and especially the case studies in part 3.  

1.3. Market Failure

If free markets are functioning well in terms of delivering efficient outcomes, there is no case on efficiency grounds for government intervention. What are the prerequisites for a well-functioning market? The theory outlined above concerning the efficiency of markets requires certain basic assumptions to be met. These are:

·       Competition: there must be a large number of buyers and sellers in the market.
·       Information: actors must be well informed regarding the price and quality of different suppliers and alternative goods.
·       The market must be for a private good. These are rivalrous and excludable. 

Rivalrous means that consumption of the good by one person prevents it being consumed by another person. The simplest example is food. If I eat an apple, you cannot eat that apple. Excludable means that the consumption of a good can be prevented. If consumption cannot be prevented then people can consume without paying the producer. An example of a non-excludable good is a defence force. Citizens cannot be prevented from benefiting from the existence of an army to defend their nation. Goods that are non-rivalrous and/or non-excludable are discussed below under public goods.

·       There can be no externalities associated with the market. An externality is a cost or benefit associated with a transaction that is not included in the price underpinning that transaction. An example of a negative externality is pollution—individuals who are not parties to a transaction incur costs from it in the form of the pollution it generates. An example of a positive externality is education. There are diffuse benefits associated with a more educated population that are not included in the private costs of tuition.

Perfect markets where all of these criteria are met entirely are extremely rare if they exist at all. However, markets where these conditions are largely met exist in abundance. Furthermore, even somewhat inefficient markets may still be a superior tool for allocating resources compared to alternatives like a planning committee. Perhaps the most powerful evidence for this proposition comes from the natural experiments of East and West Germany and North and South Korea (Ferguson 2012). In both cases, a largely homogenous population with similar access to resources was split in two and almost randomly assigned to either a market-led economic system or a centrally planned one. In both cases, the wealth of the citizens in the market-led systems rapidly outstripped that of their peers in the centrally planned system. A visceral example comes from the automotive industry. Competition or lack thereof meant that by 1988, just before the fall of the Berlin Wall, West Germany produced the iconic Mercedes Benz 300E, while East Germany produced the Trabant, an infamously terribly car.[2]  

There are some situations where markets are clearly unlikely to produce an efficient outcome if left to their own devices. These are grouped under the heading of ‘market failures’ and often result from a break-down of the assumptions outlined above. They include the following:
·       Monopolies
·       Imperfect information
·       Public goods
·       Externalities

This is not an exhaustive list of market failures, but does cover some of the most common ones. They are reviewed in detail below.

Monopoly

A monopoly occurs when only one entity is producing a certain good. When only one entity is consuming a certain good it is called a monopsony. Entities in these positions can abuse their market power to shift the price away from the market-clearing optimum but in their favour in the form of increased profits.

Monopolies arguably occur most commonly in situations of natural monopoly (Berg & Tschirhart 1988). This is where there are very large fixed costs associated with getting started in an industry, or very large economies of scale associated with that industry such that existing hegemonic firms are far more profitable than newcomers. For example, to become a player in the energy industry you need to make very large, long-term investments in plants and distribution networks before you can make any money. However, once a plant is up, you can expand your distribution network to reach more customers relatively cheaply because you don’t need to build anymore plants, only grid. As such, once there is an existing power provider in the market, new entrants will struggle realise profits and be easily undercut in the short term, which makes it less appealing for them to make the initial capital outlays required to join the sector. This entrenches the monopoly.

Monopolies can also be created by regulation. Historical examples include ‘national champions’ that were given privileged access to certain markets, like the East India Company. More recently, patents have allowed certain high-tech companies to essentially act like monopolies, at least for the duration of the patent (Boldrin & Levine 2008).

Imperfect information

The most common market failure resulting from imperfect information is asymmetric information (Akerlof 1970). This is where one-side of a market has far more information relevant to transactions in that market than the other side, which results in an inefficient market equilibrium. A textbook example is health insurance. Unhealthy people have an incentive to hide their ailments in order to secure lower premiums, and it is difficult for insurance firms to find out for certain whether a new custom is unwell or fit-as-a-fiddle (Krugman & Wells 2006). The firm consequently suffers from what is known as ‘adverse selection’ and will inefficiently provide health insurance.

Public Goods

Public goods are non-rival and non-excludable. Private actors will not supply non-excludable goods because they essentially cannot stop consumers from stealing their product. A common example is street lights. There is obvious demand for street lights, but it is difficult to charge some kind of entrance fee to any street equipped with them. As private providers will not supply the good, there is thus a strong case for state provision.

Private actors will provide non-rivalrous goods as long as they are excludable, but they will tend to undersupply them. This is because the marginal cost of providing a non-rivalrous good to an additional consumer is very low. As such, once any initial fixed-cost is paid for, it is socially beneficial to make the good available to as many people as possible on the cheap to derive maximum benefit from it. An example is a lecture. The teacher has a reserve price for preparing and delivering the lecture, but the marginal cost of extending the lecture to one more audience member is close to zero. Their entry into the lecture theatre does not impede the consumption of any other audience member, nor require any extra effort on the part of the lecturer. The benefit to this additional audience member is greater than zero, so the maximising social welfare would mean allowing them into the lecture. However, if the lecturer wants to maximise their personal profit they may well charge a higher than zero fee that is only acceptable to very interested parties, and thereby exclude many people who would benefit. As this privately optimal behaviour is not socially optimal, there is a case for public provision from an efficiency point of view.

Externalities

Markets undersupply goods associated with positive externalities and oversupply goods associated with negative externalities. This occurs because the prices that markets set do not take into account the costs and benefits incurred by third parties (Pigou 1932). An example is noise from live concerts, which can irritate people around the venue who do not want to participate in the concert. Unless these costs are factored into the ticket price, private markets will oversupply live concerts. The opposite is true in the case of positive externalities wherein social benefits are not factored in to private transactions.[3] 

The most straightforward way to correct for an externality is to fold the non-market social costs and benefits of a good into its market price. This can be done through mechanisms like subsidies, such as for education, and taxes, such as on carbon. However, in order to do this effectively, it is necessary to be able to accurately assess the value of the externality. This is often very difficult in practice (see Dobes, chapter 6 this volume). Another common approach is to try to extent property rights of some kind to the actors adversely affected by the externality. For example, if a river is being polluted by a factory and harming the livelihoods of fisherman who depend on it, extending property rights over the river to those fishers would allow them to sue the firm. This may encourage the firm to negotiate with the fishers to achieve a mutually amicable outcome (Coase 1960).

Anti-rival goods

A final cause of market failure worth discussing because of its increasing prominence is the case of goods that increase in value with greater use, which are sometimes called additive or anti-rival goods (Kubiszewski et al. 2003). Information is the most common example, but many others have emerged during the ‘information age’ that has accompanied the growth of the internet. Many contemporary goods like social media grow exponentially in value as greater numbers of people use them more frequently. It is difficult to design pricing mechanisms for such goods, especially when the benefits are diffuse and hard to quantify. There is an argument to be made for certain such products to be state or community funded and made open source so that their full value can be fully realised.

2.     Alternatives to the market

When markets fail to efficiently allocate scarce resources due to the presence of market failures, what should policymakers do? One option is to try and bring prevailing conditions closer to those of a perfect market (Friedman 1962). This is common practice with externalities, and is utilised in some hybrid models, like privatised utility companies that have to operate within a regime of price controls. In many cases though, the deviation from socially optimal outcomes that accompanies the market provision of goods in the presence of market failures is too large to be tolerable, and some (potentially also flawed) alternative is preferable. These alternatives can be lumped into two very rough categories: community provision and state provision.

2.1 Community
That community is perfectly capable of providing many services that markets fail to manage is a core tenet of libertarianism (Nozick 1974, Rothbard 1962, Chomsky 2002). People left to their own devices will arrange mechanisms to combat social problems and promulgate social goods. The most obvious case is charity, especially large contemporary organisations that do front-line service delivery of things like homeless shelters and emergency aid. The Red Cross and Medicins sans Frontiers are good examples. Simplistic libertarian arguments sometimes overlook the fact that the modern state is arguably a manifestation of (secular) community organisation for action. This is especially evident when the state provides funding for large charitable organisations through the fund-raising mechanism of tax-collection, which is administratively more efficient than seeking donations. More sophisticated libertarian theories acknowledge this point, but argue that state provision of services dissolves the social bonds that emerge as a consequence of community organisation. Critics would reply that this is a good thing—state delivery or finance of non-market goods allows for collectivism without the oppressive features of communitarianism, like family coercion. A longer discussion of these very interesting issues is unfortunately outside the scope of this chapter.

The primary shortcoming of community approaches to the provision of non-market goods is their weakness to the tragedy of the commons (Hardin 1968). In situations where resources are shared, there is typically an incentive to free-ride off the charity of others. This situation is on prominent display in contemporary international negotiations to find a cooperative solution to global climate change. In the absence of some sort of punishment mechanism, states always have an incentive to renege on their commitments to any climate change mitigation treaty and thereby receive the benefits from the carbon abatement policies of other countries while not having to contribute anything themselves.

The free-rider dynamic also emerges in the laboratory (Binmore 2012). In so-called public goods games, individual players contribute some portion of their individual resources to a common pot. At the end of a round, the pot is doubled by the experimenter and its total value distributed evenly back to the players. The highest social benefit is achieved when all players put their entire individual allocation into the pot, but the highest individual payoff is attained when a player contributes nothing to the communal pot and then receives an additional payment from it at the end of the round. In public goods games without any opportunities to punish free riders, some individuals almost invariably free ride and the number of players contributing to the public pot diminishes over subsequent rounds of the game. However, when players are able to spend some of their own funds to punish players who free-ride, those free-riders typically start contributing to the common pot in subsequent rounds.

The lesson of these examples is that you need some way to punish free-riders if a community solution to a resource allocation problem is to be effective. States employ explicit coercion through the legal system and their monopoly on physical violence. This is the approach taken by many successful international agreements, like the World Trade Organisation, which include an arbitration mechanism with punitive powers to punish signatories to the treaty who do not abide by its tenets. Communities can employ similar mechanisms in the form of ‘frontier justice’ and the like, but community coercion typically takes more tacit forms, like soft norms that encourage adherence to the authority of the family, elders or key institutions like the church. It is the coercive function of these institutions that many advocates of state-provided social services would like to do away with, but of course they can only achieve this by replacing the personable coercion of the community with the impersonal coercion of the modern state. Community approaches can also rely on the goodwill of all involved, which is sometimes enough. For example, many charitable organisations that deliver frontline services are viable because they have access to a small army of volunteers. They choose to participate. Their only reward is personal gratification. Community approaches are quite efficient in such circumstances because there is limited ability to free ride.

In recent decades, public policy has started to take community approaches to common resource management more seriously following the pioneering work of Eleanor Ostrom (1990). She noted that efficient, community-based solutions to policy problems for common resource management can emerge when the following 8 design principles are surmountable:

1.     Strong group identity and understanding of purpose
2.     Proportional equivalence between costs and benefits, meaning that people who produce benefits or bear costs are rewarded appropriately.
3.     Collective-choice arrangements
4.     Effective monitoring
5.     Graduated sanctions, meaning that actors who break rules are punished in increasing severe ways the more frequent their transgressions.
6.     Conflict resolution mechanisms
7.     Community groups must have minimal rights to organise granted by the state

A simple example she provides is of fishermen from Alanya in Turkey. They have devised a system for the daily rotation of individual fishing spots so that each fisher gets equal access to the best spots over the course of the year, and the area is not overfished leading to collapse. A state apparatus is unlikely to have been able to craft such an efficient system, and a market approach involving property rights to spots allocated to particular fishers would not have been as equitable.

2.2. The State

If both the community and the market result in inefficient outcomes, that leaves the state as a potential source of solutions to the problem of resource allocation. Modern states have some clear strengths: they have enormous financial capacity, technology resources and access to expertise, and they have the ability to enforce laws and often the authority to do so. States also have some advantages in administrative efficiency. While the bureaucracy is notoriously inefficient, it has some features, notably its institutional longevity and regulatory capacity, which can make it very efficient for administering large-scale programs like income-contingent loan financing (see chapter 8, this volume). However, it should be stressed that market failure or some other departure from a theoretical optimum does not automatically justify or demand state intervention (Demsetz 1969). The medicine may be worse than the poison, as it were. Interventions must be justified on their own merits after careful analysis.

The strengths of states allow them to overcome many of the inefficiencies that plague markets and community. An authoritative, organised legal system can punish those who deviate from agreements and norms that ensure cooperative, collectively beneficial outcomes, like good-faith contracting and freedom from violence. Financial resources and the power to collect tax make it relatively easy for states to provide public goods. The ability to tap expertise to design and enforce sophisticated (though not necessarily complex) regulation makes it possible for states to correct some externalities, such as by setting up carbon markets or subsidising public transport. States’ capacity also allows them to overcome some information problems by collecting information through their many arms, collating it and sharing it with relevant parties. For example, the Australian Renewable Energy Agency collects information from industry partners it works with and disseminates that information publically to bring Australia’s energy market and associated industries to improve market efficiency.

States also have weaknesses, of course. For a start, the ethics of state coercion are extremely fraught. 
There is also the sclerotic pace of the bureaucratic process. This is the inevitable result of requiring extensive checks on officials when they spend taxpayer dollars. Shareholders choose to bear the risk of fraud in private companies. This isn’t feasible in government because taxpayers have very little ‘choice’ when it comes to buying government shares, because governments have a systemic role to play in society and the economy, and because governments have intergenerational obligations to people who aren’t born yet. The private sector also overcomes the need for a lot of red tape by making individual line managers more accountable for certain decisions. Decisions need to travel a shorter distance up the management hierarchy before they are signed off on, which accelerates the pace of processing. The flip side of this increased accountability for junior managers is that they can be fired much more easily than equivalent public sector managers. The end result is that there is less need to ensure all decisions are good ones in the private sector, but also a greater risk of bad decisions being made. Governments can much less readily afford to take such risks.

There are two other major sources of inefficiency commonly associated with state provision: moral hazard and principle-agent problems. Moral hazard involves excessive risk-taking because the agent is sheltered from the risks. Public servants make decisions that affect others much more than themselves, notably in the case of regulating far-off individuals. When these decisions have adverse consequences, the public servant is largely insulated from the fallout. Even politicians have more skin in the game. Moral hazard occurs in the private and community sectors as well, but is acute in the public sector because bureaucrats spend other people’s money, work in flatter management structures that make apportioning blame harder, lack a strong incentive to maximise profit and minimise costs, and typical try to fulfil objectives are hard to measure, making success and failure more open to interpretation. 

A principle-agent problem is where the interests of an individual, the principle, diverge from those of an agent they hire to perform a service for them. The textbook example is voters and politicians. Voters want politicians to govern for them because they have better things to do with their lives. Politicians want votes, so there appears to be a convergence of interests. However, politicians also need money to fund their election campaigns. In the absence of public election finance and controls on fundraising, this forces budding politicians to find political donors. The interests of these donors may diverge from those of the voters who ultimately elect the politicians.

3.     Equity and Justice

There is a lot more that could be said about the comparative advantages of governments, markets and community for efficiently allocating resources to desired goods, but it is outside the scope of this chapter. What is more valuable to discuss is the other fundamental criterion for the allocation of resources besides efficiency: equity.

A good foundation for this discussion is the distinction between relative and proportional equity. Relative equity means that nobody should have substantially more resources than somebody else. There are instrumental and intrinsic arguments for why relative inequality needs to be minimised. On the instrumental front, some argue that greater inequality is correlated with various forms of social breakdown, including crime, drug use, teenage pregnancy and the capture of democratic institutions by rent-seeking elites (Wilkinson 2011, Stiglitz 2013). The empirical veracity of these claims is hotly contested (Snowden 2011).

The intrinsic arguments are more ethical in nature. Principle among these arguments is that in a liberal setting, one’s life outcomes in terms of wealth, health and so on are substantially determined by the genetic lottery. It seems unfair that we should have less than others through no fault of our own, so society should correct for these perverse outcomes of luck. The second intrinsic argument for combatting inequality is that there seems to be diminishing marginal returns to utility from greater access to resources. In layman’s term, a dollar makes a poor person much happier than it does a rich person. As such, we can improve the wellbeing of society as a whole by taking some money from the rich and giving it to the poor (Layard 2006). Finally, there is a rights-based argument that because we are all human we are all entitled to some portion of the collective pie. Perhaps the most well-known manifestation of this approach to economic justice is Amartya Sen’s definition of development as freedom, wherein the objective of economic policy should be to enhance the capabilities of individuals to be who they want to be and do what they want to do (Sen 1999).

Proportional equality emphasises getting what you deserve. Libertarians and those in favour of strict meritocracies tend to emphasise proportional equity, especially when it comes to keeping the rewards of your own hard work (Mankiw 2013). It is hard to reconcile these two kinds of equity because it is hard to fund redistribution for the purposes of addressing relative inequality without taxation, which infringes upon proportional equity.

The situation is further complicated by the fact that a normative inclination towards either proportional or relative equity seems to be hard-wired into our biology (Haidt 2012, Greene 2013). Recent research in the evolutionary psychology of moral cognition shows that the neural-architecture that incenses people when they are confronted by inequity is the same for advocates of proportional and relative equity, even though their intuitions about particular examples of inequality often run in opposite directions. For example, welfare payments to the unemployed are critical for addressing relative inequality, but these payments are anathema to advocates of proportional equity because it seems that bludgers are getting something for nothing. There is now a suspicion that our species promotes both value systems at the genetic level for evolutionary reasons: a group that doesn’t care about relative inequality can’t compete effectively against other groups, but a group that doesn’t care about proportional equity fails to provide sufficient incentives for innovation and initiative and quickly succumbs to the tragedy of the commons.

When policymakers engage with proportional and relative equity considerations they often start with some kind of social welfare function (SWF). Arguably, the most basic SWF is the classical utilitarian one, which simply adds up the utility of all individuals in society:

Utilitarianism is interested in maximising total utility, and will engage in redistribution so long as it results in a potential Pareto improvement or a Hicks-Kaldor improvement. As such, there is a degree of equity in Utilitarian notions of justice, but the primary concern is efficiency.
A slightly more complex social welfare function that informs a lot of public policy thinking, though typically only implicitly, is the Rawlsian social welfare function (Rawls 1971). This tries to maximise the utility of the worst off person in society[4]:

Rawlsian social welfare functions require policy makers to consider whether a policy that will grow the size of the economic pie—that is, increase efficiency and/or productivity in the economy—will also increase the size of the slice of the pie attained by the worst-off members of society. So for example, Rawlsians would likely be in favour of taxation for redistribution, but not if it stymied economic activity such that the poor couldn’t find jobs. Similarly, they would be in favour of tax cuts for the rich if they increased total tax receipts with which to fund transfer programs (Sowell 2012), but not if the cuts simply resulted in the more economic activity benefitting the middle and upper classes. 

4.     Achieving equity efficiently

It is generally taken for granted that some degree of equity is desirable. What is more contested is the extent to which we should trade off efficiency for equity. Metaphorically, how much are we willing to sacrifice the total size of the pie to ensure it is split and shared more equally? Continuing on from the analysis above, the first thing to note in this regard is that while markets are remarkably effective at ensuring efficiency, they do not produce equitable outcomes, quite the opposite in fact. However, inequity is not a market failure because perfect markets care about Pareto efficiency, not equity. From any given initial endowments, individuals in operating in free, perfect market will trade to a Pareto efficient point. To improve equity without interfering with the ability of markets to produce this efficient outcome, policymakers need to change the initial endowments that people have and then leave people to trade for the specific goods that they want (Edgeworth 1881). For this adjustment of initial endowments you need instruments of redistribution, notably taxes. Here we come to one of the stickier issues in economics and public policy, namely the efficiency-equity trade-off.  

In practice, while we would ideally like to achieve equity efficiently, redistribution is almost invariably somewhat inefficient because of its disincentive effects (see chapter 13, this volume). If people know that some of what they work hard to earn will be taxed away and that they can get a transfer payment even if they do nothing, then they will be inclined to work less (Mirrlees 1971). Similar inefficiencies pop up in all forms of taxation (Okun 1975). Taxes on goods distort those markets and encourage an inefficient allocation of resources to substitute goods. Payroll taxes discourage firms from hiring labour and they instead invest in capital beyond the point where it would otherwise be efficient to do so. Ironically, many largely efficient taxes, that is, taxes without large behavioural effects nad associated dead-weight losses in economic activity, have undesirable implications for equity. For example, goods and services taxes applied to all markets uniformly are efficient because they maintain relative prices, but they are also regressive because they impact the budgets of the poor proportionally more than the budgets of the rich.

There are, however, some redistributive policies where trade-offs between equity and efficiency are minimised. A prominent example is in the provision of social mobility programs, notably public health and public education, which help people improve their human capital and thereby get a good job, and public transport, which helps people to get to their jobs. The positive impact of these programs on productivity means that they pay themselves off, at least to some extent. Programs that effect this kind of ‘equality of opportunity’ tend to receive support from both the left and right wing, unlike policies that are oriented more strictly at proportional or relative equity. Another case where equity policies don’t necessarily result in inefficiency is when they involve addressing market failure. This is arguably true of all equality of opportunity policies. For example, public health overcomes the adverse selection problems that plague private health insurance markets by requiring everyone to sign up to a single insurance provider, while public education and transport both correct for positive externalities like better informed voters and less congested roads.

More broadly, by assiduously combined a variety of policy tools, sophisticated policy design can minimise the need for trade-offs across equity and efficiency. This idea, which we call ‘hybrid’ policy, is the central theme of this volume. There are often opportunities in contemporary public policy to make substantial improvements to both the efficiency and equity of the status quo with better policy design or technology. Better design or technology can also allow policymakers to identify and realise ‘bargains’, where large gains in efficiency can be had at relatively low cost in terms of equity and vice versa. It is only after the low-hanging fruit are picked and the good deals exhausted that we need to start making strong normative judgements about the relative value of efficiency and equity, which is most appropriately left to voters. Unfortunately, it is these normative debates that dominate politics and electioneering, often at the expense of the tremendous gains that could be made if this passion were focused on hybrid policies and ensuring bipartisan outcomes instead. Modern public policy combines the strengths of state, market and community tools to offset their individual weaknesses, thereby overcoming the old (false) dichotomy of markets for efficiency and governments for equity to achieve both outcomes simultaneously. A range of examples are explored through case studies in section three of this volume.



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[1]                                      Whether the losers of economic change in the late 20th century were in fact compensated is important for understanding many contemporary sociological trends, notably the backlash to globalisation. Crudely speaking, nations that undertook structural adjustment through the 80s and 90s towards more open markets and exposure to international competition under left-leaning governments, including Canada, Australia and the Scandinavian countries, have seen far less harm to their working and middle class in the subsequent decades compared to nations that prosecuted structural adjustment without much care for compensation, like the United States under Reagan and Britain under Thatcher. Prospering in an (efficient) open-economic environment requires mobility in the form of education, health and the ability to relocate (Garnaut 2016). Taxing those who gain from open-economic settings to fund these services for everyone else so that they too can prosper has been critical to the sustainability and success of structural adjustment. Where due heed was not paid to these compensatory dimensions, whole communities have gone under, feeding the current revival of protectionist and nativist sentiment. However, where structural adjustment towards more efficient systems was not undertaken at all, as arguably is the case in France and Japan, growth has stalled and unemployment (often disguised in the form of irregular work) has crept upwards. 
[2]                                      It is also worth noting that in theory, a benevolent and omniscient planner, to be efficient, would end up making exactly the same production decisions as the competitive free market (Barone 2012)
[3]                                              Merit goods are a curious case of market failure that is sometimes analysed in terms of externalities. Merit goods are things society thinks should be distributed on the basis of need rather than ability or willingness to pay, like a basic education or food stamps (Musgrave 1959). Another way to think about them is that they have some ethical value that transcends their economic value. This conception is particularly stark in the case of some demerit goods, like paedophilia. Free markets would not factor in these ethical dimensions and thus result in the inefficient production of these goods. These ethical dimensions can arguably be thought of as negative and positive externalities.

[4]                                      The thought experiment Rawls uses as the foundation of his argument for redistribution is the ‘original position’, in which the individual makes decisions under the ‘veil of ignorance’. In this situation, individuals understand human nature and social organisation, but don’t know who they will be in society, including things like income, caste and even their own moral preferences. Rawls argues that under these conditions, individuals will opt to design institutions such that they protect fundamental rights and liberties and ensure that policy always benefits the least well-off members of society, as there is an equal chance that all people involved in the veil of ignorance might be that worst-off person. 

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