The Welfare Effects Of A Government Policy Economics Essay

For the intent of this paper demand and supply analysis is used to demo how it can be applied to a broad assortment of economic jobs. In the first subdivision consumer and manufacturer excess is better defined and explained to understand the public assistance effects of a authorities policy. In other words, consumer and manufacturer excess can measure who additions and who loses from a given policy, and besides by how much. Besides note that these two constructs of excess can besides be used to show the efficiency of a competitory market.

In the subdivisions to follow lower limit monetary values, monetary value supports, and related policies will be discussed in more item. To help the theory, demand-supply analysis will be used to understand and measure these policies.

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Consumer and Producer Surplus

To understand consumer and manufacturer excess better the rules of monetary value ceilings and floors will be discussed. As opposed to monetary value floors, a government-imposed monetary value ceiling means that the monetary value is set at a lower degree than the monetary value in the prevailing market. Likewise, monetary value ceilings will do the measure of a good demanded to lift. This happens because at lower monetary values consumers want to purchase more. On the other manus, the measure supplied will fall because manufacturers are non willing to provide every bit much at lower monetary values. As a consequence of this a deficit will happen, which besides indicates extra demand. Note that those consumers who can still purchase the good will be better off because they now pay less. However, supply will fall, coercing manufacturers to supply less of their goods.

The undermentioned subdivision provides a more elaborate account of the public assistance gained or lost by both consumers and manufacturers, should certain monetary values be imposed. For the intent of this subdivision the premise follows that consumers and manufacturers buy and sell at the predominating market monetary value in an unregulated, competitory market.

However, for some consumers the value of the good in inquiry exceeds the predominating market monetary value. This besides means that the consumer would be willing to pay more for the good if it was expected. Therefore, consumer excess is the entire benefit that consumers receive beyond what they pay for the good ( Pindyck and Rubinfeld, 2005:300 ) . For illustration if the market monetary value of a merchandise is R7, but the consumer is willing to pay R10 for it, so his cyberspace benefit will be R3.

Consumer excess can besides be explained with the aid of demand and supply curves. In this respect consumer excess can be interpreted as the country between the demand curve and the market monetary value. Pindyck and Rubinfeld ( 2005:300 ) besides states that consumer excess measures the net benefit to consumers in the sum, hence, this analysis can be used to better understand the additions or losingss induced from authorities intercessions.

On the other manus, manufacturer excess is the tantamount step for manufacturers ( Pindyck and Rubinfeld, 2005:301 ) . If goods were to be produced at a monetary value lower than the market monetary value, so more could be produced. Therefore, manufacturers will bask a benefit, or instead a excess, from selling those units. This excess is the difference between the market monetary value the manufacturer receives and the fringy cost of bring forthing the units. It can besides be better explained as the country above the supply swerve up to the market monetary value.

Basically consumer and manufacturer excess is used for economic analysis to measure the public assistance effects of a authorities intercession in the market. It assists with expecting who will derive or lose from the intercession, and besides by how much. To make so the constructs of monetary value ceilings and monetary value floors will be explained in more item.

Price Ceilings

Price ceilings occur when production ( supply ) is decreased and the measure demanded is increased ( Pindyck and Rubinfeld, 2005:301 ) . Price ceilings tend to do extra demand, or instead deficits, to happen. Figure 1: Graphic Presentation of a Price Ceiling

The undermentioned subdivision provides a theoretical account of Figure 1 and the effects of monetary value ceilings on consumers and manufacturers severally:

Consumer Surplus ( Pindyck and Rubinfeld, 2005:302 ; and Perloff, 2005:274, 296, 297 ) :

Consumers are better off as they can purchase the good at a lower monetary value.

Therefore, the consumers that still buy the good enjoy an addition in consumer excess, which is resembled by rectangle A.

On the other, those consumers who can no longer purchase the good lose excess. Their loss is represented by trigon B.

Therefore, the net alteration in consumer excess which is a positive consequence is:

a?†CS = A – Bacillus

Producer Surplus ( Pindyck and Rubinfeld, 2005:303 ; and Perloff, 2005:278, 280, 297 ) :

With monetary value controls, some manufacturers will remain in the market but will have a lower monetary value for their end product. Therefore, they have lost the manufacturer excess represented by rectangle A.

Other manufacturers may nevertheless go forth the market. This means that entire production will besides drop, which is represented by trigon C.

Therefore, the alteration in manufacturer excess, which is a negative consequence, is:

a?†PS = ( -A ) – Degree centigrade

Deadweight Loss ( Pindyck and Rubinfeld, 2005:304 ; and Perloff, 2005:280, 281 ) :

Monetary value controls will ensue in a net loss, which is besides referred to as deadweight loss.

Therefore, uniting the alteration in both consumer and manufacturer excess will convey along a entire alteration in excess as follows:

Deadweight Loss = ( A – Bacillus ) + [ ( -A ) -C ] = ( -B ) – Degree centigrade

In kernel, deadweight loss consequences in an inefficiency caused by monetary value controls.

In summing up, a monetary value ceiling is that monetary value held below the predominating market monetary value. It simply means that excessively small is produced and, at the same clip, that consumers and manufacturers in the sum are worse off ( Pindyck and Rubinfeld, 2005:306 ; and Mohr, 2004:162, 163 ) .

Monetary value Floors

In contrast to monetary value ceilings, monetary value floors indicate what happens when authorities requires for the monetary value to be above the market monetary value. Although manufacturers would wish to bring forth more at this higher monetary value ( indicated on the supply curve at P2 ) consumers will now purchase less. If we assume that manufacturers merely produce what can be sold, so the market end product degree will be at Q1. Once once more there is a celebrated net loss of entire excess ( Pindyck and Rubinfeld, 2005:306, and Perloff, 2005:293 ) :

Triangles B ( a loss of consumer excess ) and C ( a loss of manufacturer excess ) represents the deadweight loss.

Rectangle D represents the transportation from consumers to manufacturers, who now receive a higher monetary value.

Figure 2: Graphic Presentation of a Price Floor

In fact, the deadweight loss gives an optimistic appraisal of the efficiency cost of policies. The ground for this premise is that some manufacturers may still nevertheless addition monetary values after the monetary value floor have been incorporated. This would, in bend, consequence in unsold end product. However, should the manufacturer receive more importance with respect to applicable policies, so authorities might purchase up the unsold end product to keep production at Q0. In both instances, the entire public assistance loss will transcend the countries of trigons B and C ( Pindyck and Rubinfeld, 2005:307 ) .

The Efficiency of a Competitive Market

As discussed already, consumer and manufacturer excess can be used to measure economic efficiency in the sum. In the old subdivision it was shown how monetary value controls create a deadweight loss. Therefore, the policy imposes an efficiency cost on the economic system ( Pindyck and Rubinfeld, 2005:306 ) . Both consumer and manufacturer excess are reduced by the sum of the deadweight loss. This does non intend that such a policy is bad. It may nevertheless accomplish other aims that policymakers and the public consider of import.

Many research workers argue that if the lone aim is to accomplish economic efficiency, so a competitory market would be better left entirely. This means that no intercessions should happen. However, in some instances market failure will happen because monetary values fail to supply the proper signals to consumers and manufacturers. Besides, the unregulated, competitory market could be inefficient. These indicants of market failure may happen because of two cases ( Pindyck and Rubinfeld, 2005:306 ) :

Outwardnesss: Sometimes the actions of either consumers or manufacturers will ensue in a cost/benefit that does non demo up as portion of the market monetary value. Such a cost/benefit can besides be referred to as outwardnesss because they are ‘external ‘ to the market. An illustration of this is the cost to society of environmental pollution by a manufacturer of industrial chemicals.

Lack of Information: When consumers lack information about the quality or nature of a merchandise and can therefore non do a utility-maximising buying determination.

If these two cases ( outwardnesss and/or the deficiency of information ) are absent in a market so that unregulated, competitory market will basically hold no obstructions, and an economically efficient end product degree can be reached.

Minimal Monetary values

For the intent of this subdivision we will mention back to Figure 2. From the graph we can see that if manufacturers can correctly expect that they can sell merely the lower measure Q1, so the net public assistance will be given by trigons B and C. However, as mentioned before, manufacturers may non restrict their end product to Q1. Incorporating Figure 2 to exemplify minimal monetary values, the undermentioned notations has to be made ( Pindyck and Rubinfeld, 2005:310 ) :

P2 denotes a minimal monetary value set by the authorities.

Q2 denotes the measure supplied, and Q1 denotes the measure demanded. The difference between Q1 and Q2 represents extra supply, or instead, unsold supply.

Therefore, Consumer Surplus ( Pindyck and Rubinfeld, 2005:310 ) :

Those consumers who still buy the good must now pay a higher monetary value ( Rectangle D ) .

Some consumers will besides drop out of the market ( Triangle B ) .

Therefore, consumer excess remains the same as before and indicates that consumers are really worse off as a consequence of this policy:

a?†CS = ( -D ) – Bacillus

Producer Surplus ( Pindyck and Rubinfeld, 2005:311 ) :

Manufacturers, on the other manus, receive a higher monetary value for the units they sell, which consequences in an addition of excess ( Rectangle D ) .

Rectangle D can besides be better described as the transportation of financess between consumers and manufacturers.

But, the bead in gross revenues from Q0 to Q1 really consequences in a loss of excess which is represented by trigon C.

Besides retrieve that the supply curve is a representation of the extra cost of bring forthing each incremental unit. Therefore, the country under the supply curve from Q1 to Q2 is the cost of bring forthing measure Q2 less Q1. This country is represented by trapezoid E. Unless manufacturers respond to unsold end product by cutting production, the entire alteration in manufacturer excess will be:

a?†PS = D – C – Tocopherol

Minimal monetary values is simply one of the ways to raise monetary values above the predominating market degree through the direct intercession and ordinance of the authorities – merely do it illegal to bear down a monetary value lower than a specific minimal degree. As a consequence, this signifier of authorities intercession can cut down manufacturer ‘s net incomes because of the cost of extra production. Another illustration of this is a minimal pay jurisprudence. In other words, a pay rate at a degree higher than the market monetary value will ensue in those workers who can happen occupations and gain a higher final payment. However, some people who want to work will be unable to, which will ensue in a policy that brings about unemployment ( Pindyck and Rubinfeld, 2005:311 ) .

Monetary value Supports and Production Quotas

Besides enforcing a minimal monetary value, the authorities can besides increase the monetary value of a good in other ways. In agricultural policy the system is largely based on monetary value supports, but monetary values can besides be increased by curtailing production, either straight or through inducements to manufacturers ( Pindyck and Rubinfeld, 2005:314 ) . In this subdivision these policies will be examined in more item as to demo how consumers, manufacturers and the authorities budget are affected.

Monetary value Supports:

In general, monetary value supports purpose to increase the monetary values of dairy merchandises, baccy, peanuts, etc. This is done with the purpose that the manufacturers of these types of merchandises earn higher incomes. This fundamentally entails that the authorities sets the encouraging monetary value and so buys up whatever end product is needed to maintain the market monetary value at this degree. The ensuing gains/losses will be as follows:

Figure 3: Government Price Supports

Consumers Surplus ( Pindyck and Rubinfeld, 2005:315 ) :

At monetary value P2, the measure demanded falls to Q1, and the measure supplied additions to Q2.

To keep this monetary value and avoid stock lists holding to stack up, the authorities must purchase the measure Qg = Q2 – Q1.

Because the authorities adds its demand to the demand of the consumers, manufacturers can sell all they want at monetary value P2.

Therefore, the consumer excess will be calculated in the same manner as with minimal monetary values:

a?†CS = ( -D ) – Bacillus

Manufacturers Surplus ( Pindyck and Rubinfeld, 2005:315 ) :

Price support policies are implemented with the purpose to increase the additions that manufacturers receive because manufacturers are now selling a higher measure ( Q2 ) at a higher monetary value ( P2 ) .

Therefore manufacturer excess will be as follows:

a?†PS = D + B + F

Government Welfare ( Pindyck and Rubinfeld, 2005:315 ) :

However, there is besides a cost to authorities, which in kernel is paid for by revenue enhancements.

Therefore, finally this is really a cost indirectly related to consumers.

This sum is represented by the rectangle that makes up BCEFG.

This cost may be reduced if the authorities can ‘dump ‘ some of its purchases, for illustration, selling them abroad at a low monetary value. However, making so hurts the ability of the domestic market to sell in foreign markets.

The entire public assistance cost of this policy could be defined as:

a?†CS + a?†PS – Cost to Gov = D – ( Q2 – Q1 ) P2

If the aim is to give manufacturers an extra income equal to D + B + F, it is far less dearly-won to society if authorities were to give them this money straight instead than via monetary value supports. This can be supported by the fact that monetary value supports are bing consumers D + B anyhow. If authorities wage manufacturers straight, so society will salvage the big rectangular country BCEFG less triangle F ( Pindyck and Rubinfeld, 2005:316 ) . However, monetary value supports are in usage most likely because they are a less obvious giveaway and, hence, politically more right.

Production Quotas:

The authorities can besides do the monetary value of a good to lift by cut downing supply. Government can make this by puting quotas on how much each house can bring forth. With appropriate quotas, the monetary value can so be forced up to any arbitrary degree. An illustration of this could be the control of spirits licences by the authorities. By necessitating any saloon or eating house to hold a spirits licence and, at the same clip restricting the figure of licences, will ensue in limited entrants into that market. This besides allows those with licences to gain higher monetary values and net income borders. The public assistance effects of production quotas will be explained in the undermentioned subdivision ( Pindyck and Rubinfeld, 2005:317 ) :

The authorities restricts the measure supplied to Q1, instead than at the market degree of Q0.

Therefore the supply curve becomes the perpendicular line S ‘ at Q1.

As a consequence consumer excess is reduced by rectangle D plus trigon B.

On the other manus, manufacturers gain rectangle D less triangle C.

Therefore, one time once more, there is a deadweight loss that occurs which is represented by B + C:

a?†CS = ( -D ) – Bacillus

a?†PS = D – C + ( Payments for non bring forthing )

However, the cost to the authorities is a payment sufficient plenty to give manufacturers an inducement to cut down end product to Q1.

That inducement must be at least every bit big as ( B + C + F ) , because that country represents the extra net income that could hold been made if the quota was non applicable.

Besides retrieve that the higher monetary value ( P2 ) give manufacturers ‘ inducement to bring forth more even though the authorities is seeking to acquire them to bring forth less.

Therefore, the cost to authorities is at least B + C + F and the entire alteration in manufacturer excess is:

a?†PS = D – C + B + C + F = D + B + F

a?†Welfare = ( -D ) – B + D + B + F – B – C – F = ( -B ) – Degree centigrade

Figure 4: Supply Restrictions via Production Quotas

This is the same alteration in manufacturer excess as with monetary value supports hence, manufacturers should in kernel be apathetic between the two policies because they end up deriving the same sum of money from each. Likewise, consumers end up losing the same sum of money ( Pindyck and Rubinfeld, 2005:318 ) . It can besides be noted that, one time once more, the society will clearly be better off in efficiency footings if the authorities merely gave the manufacturers ( by and large in the agricultural sector ) D + B + C, go forthing monetary value and end product entirely. Manufacturers would so derive D + B + C and the authorities would lose this net income for a entire public assistance alteration of nothing, alternatively of a loss of B + C. However, economic efficiency is non ever the aim of authorities policy.

Import Quotas and Duties

Many states use import quotas and duties to maintain the domestic monetary value of a merchandise above universe degrees and thereby enable the domestic industry to bask higher net incomes than it would under free trade. However, the cost to taxpayers from this protection can be comparatively high. Without a quota or duty, a state will import a good when its monetary value is below the monetary value that would predominate domestically, were at that place no imports ( Pindyck and Rubinfeld, 2005:321, 322 ; and Perloff, 2005:298, 299 ) .

Figure 5: The Affect of an Import Tariff/Quota on Imports

S and D represent the domestic supply and demand.

Because the universe monetary value ( P1 ) is below domestic demand and supply, it gives domestic consumers an inducement to buy from abroad if imports are non restricted.

If that is the instance so domestic monetary value will fall to the universe monetary value at P1.

At a lower monetary value, domestic production will fall to Q1 and ingestion will lift to Q2.

So imports will be the difference between domestic ingestion and production ( Q2 – Q1 ) .

Now suppose the authorities, bowing to force per unit area from the domestic industry, eliminates imports by enforcing a quota or a duty at Q0.

This will prohibit any importing of the good in inquiry.

With no imports allowed the domestic monetary value will lift to P0.

Consumer Excess:

As a consequence, consumers who still buy the good will now pay a higher monetary value and will lose the excess represented by trapezoid A and trigon B.

In add-on, some consumers will no longer purchase the good which consequences in a farther loss represented by trigon C. Therefore, the entire alteration in consumer excess will be:

a?†CS = ( -A ) – B – Degree centigrade

Producer Surplus:

In concern with manufacturers, end product is now higher ( Q0 alternatively of Q1 ) .

End product is besides sold at a higher monetary value ( P0 alternatively of P1 ) .

Producer surplus hence additions by the sum of trapezoid Angstrom:

a?†PS = A

a?†Welfare = ( -B ) – Degree centigrade

Uniting both a?†CS and a?†PS to obtain the entire public assistance consequence simply indicates one time once more that there is a deadweight loss. This loss indicates that consumers lose more than what manufacturers gain.

Imports could besides be reduced to zero by enforcing a sufficiently big duty. The duty would hold to be equal to or greater than the difference between P0 and P1. With a duty of this size there will be no imports and, hence, no authorities gross from duty aggregations. Therefore, the consequence on consumers and manufacturers would be the same as with a quota ( Pindyck and Rubinfeld, 2005:323 ) .

However, authorities policy is more frequently designed to cut down, but non extinguish, imports ( as shown in Figure 6. Again, this can be done with either a duty or a quota ( Pindyck and Rubinfeld, 2005:323 ; and Perloff, 2005:300, 301 ) :

When imports are reduced, the domestic monetary value is increased from P1 to P0.

Trapezoid A is once more the addition to domestic manufacturers.

The loss to consumers is A + B + C + D.

Therefore, if a duty is used, the authorities will derive rectangle D, the gross from the duty.

Therefore, the net domestic loss will be B + C.

If a quota is used alternatively, so rectangle D becomes portion of the net incomes of foreign manufacturers, and the net domestic loss will be B + C + D.

Figure 6: The General Case with an Import Duty or Quota

The Impact of a Tax or Subsidy

The load of a revenue enhancement ( or the benefit of a subsidy ) falls partially on the consumer and partially on the manufacturer. In this subdivision it will go clear that the portion of a revenue enhancement accepted by consumers depends on the forms of the demand and supply curves and, in peculiar, on the comparative snaps of demand and supply ( Pindyck and Rubinfeld, 2005:326 ) .

The Effects of a Specific Tax

A specific revenue enhancement can be better defined as a revenue enhancement of a certain sum of money per unit sold. This is in contrast to an ad valorem revenue enhancement which is a relative revenue enhancement. However, the analysis of an ad valorem revenue enhancement is approximately the same and yields the same qualitative consequences ( Pindyck and Rubinfeld, 2005:326 ) . Examples of specific revenue enhancements are sin revenue enhancements on coffin nails and spirits.

Suppose the authorities imposes a revenue enhancement of T cents per unit. This means that the monetary value the purchaser pays must transcend the monetary value the marketer receives by t cents. Figure 7 illustrates this accounting relationship and its deductions ( Pindyck and Rubinfeld, 2005:326 ) :

Figure 7: The Effectss of a Specific Tax

Here, P0 and Q0 represent the monetary value and measure before the revenue enhancement is imposed.

Pd is the monetary value that purchasers pay and Ps is the monetary value that Sellerss receive after the revenue enhancement is imposed.

Therefore, Pd – Ps = T.

Here the load of a revenue enhancement is split equally between purchasers and Sellerss. Buyers lose A + B, while Sellerss lose D + C.

On the other manus, the authorities earns A + D in gross.

Therefore, the deadweight loss is one time once more B + C.

The solution is hence to happen the measure that corresponds to a monetary value of Pd and Ps so that T = Pd – Postscript. This measure is shown as Q1. As seen from Figure 8, the load of the revenue enhancement is shared approximately equally between purchasers and Sellerss. It can besides be stated that the monetary value that purchasers pay rises by half of the revenue enhancement, and the monetary value that Sellerss receive falls by approximately half of the revenue enhancement. As Figure 7 and 8 shows, market glade requires four conditions to be satisfied after the revenue enhancement is in topographic point ( Pindyck and Rubinfeld, 2005:327, 328 ) . These four conditions can besides be written and distinguished as four different equations that must ever be true:

The measure sold and the purchaser ‘s monetary value must lie on the demand curve, because purchasers are interested merely in the monetary value that they must pay. Qd = Qd ( Pd )

The measure sold and the marketer ‘s monetary value must both lie on the supply curve, because Sellerss are merely concerned with the monetary value they are to have. Qs = Qs ( Ps )

The measure demanded must be the measure supplied ( Q1 ) . Qd = Qs

The difference between the monetary values of purchasers and Sellerss must be t. Pd – Ps = T

There is a alteration in consumer and manufacturer excess, every bit good as in authorities gross can be summarised as follows ( Pindyck and Rubinfeld, 2005:328 ; and Perloff, 2005:289, 290 ) :

a?†CS = ( -A ) – Bacillus

a?†PS = ( -C ) – Calciferol

a?†Welfare = ( -A ) – B – C – D + A + D = ( -B ) – Degree centigrade

From the above information we have seen that the load of a revenue enhancement is shared about equally between purchasers and Sellerss, nevertheless, this is non ever the instance. If demand is inelastic and supply is comparatively, so the load of the revenue enhancement will fall largely on the purchaser. Demand will work in the opposite manner. It can besides be determined if the load of a revenue enhancement falls more on the purchaser or the marketer ( Pindyck and Rubinfeld, 2005:328 ) :

Pass-through fraction ( Buyer ) = Ed / ( Es – Erectile dysfunction )

This equation therefore stipulates what fraction of the revenue enhancement is ‘passed-through ‘ to consumers ( purchasers ) and manufacturers ( Sellerss ) in the signifier of higher monetary values. So, if the demand is wholly inelastic ( when Ed = 0 ) so that the pass-through fraction is 1, so all the revenue enhancement is borne by the consumers ( Pindyck and Rubinfeld, 2005:328 ) . Similarly, when demand is wholly elastic, the pass-through fraction is zero and manufacturers bear all the revenue enhancement. Therefore, the equation fundamentally indicates that a revenue enhancement falls on the purchaser if Ed / Es is little, and on the marketer if Ed / Es is big.

The Effects of a Subsidy

A subsidy can be analysed in much the same manner as a revenue enhancement. In fact, a subsidy can be better defined as a negative revenue enhancement. With a subsidy, the Sellerss ‘ monetary value exceeds the purchasers ‘ monetary value and the difference between the two is the sum of the subsidy. Therefore, the consequence of a subsidy on the measure produced and consumed is the antonym of the consequence of a revenue enhancement, which besides means that the measure will increase ( Pindyck and Rubinfeld, 2005:329 ) .

Figure 8: The Effectss of a Subsidy

In general, the benefit of a subsidy accrues mostlyto purchasers if Ed / Es is little, and to Sellerss if Ed / Es is big. Besides, the same four conditions needed for the market to unclutter, use for a subsidy as it did for a revenue enhancement. The lone difference is that now the difference between the Sellerss ‘ monetary value and the purchasers ‘ monetary value is equal to the subsidy ( Pindyck and Rubinfeld, 2005:329 ) :

Qd = Qd ( Pd )

Qs = Qs ( Ps )

Qd = Qs

Ps – Pd = s


From this paper the grounds shows that simple theoretical accounts of demand and supply can be used to analyze a broad assortment of authorities policies. These include monetary value controls, lower limit monetary values, monetary value supports, production quotas, import duties and quotas, and revenue enhancements and subsidies. In each instance, consumer and manufacturer excess are used to measure the additions and losingss to consumers and manufacturers. These additions and losingss can be rather big.

Evidence have besides indicated that when the authorities imposes a revenue enhancement or subsidy, monetary value normally does non lift or fall by the full sum of the revenue enhancement or subsidy. Besides, the incidence of a revenue enhancement or subsidy is normally split between consumers and manufacturers. The fractions that each group ends up paying/receiving depend on the comparative snaps of demand and supply.

It is of import to retrieve that authorities intercession by and large leads to a deadweight loss, even if consumer and manufacturer excess is weighted every bit. In some instances this deadweight loss will be little, but in other instances ( monetary value supports and import quotas ) it is big. This deadweight loss is a signifier of economic inefficiency that must be taken into history when policies are designed and implemented.

In summing up, authorities intercession in a competitory market is non ever bad. Government, and the society it represents, might hold aims other than economic efficiency. There are besides state of affairss in which authorities intercession can better economic efficiency. Examples are outwardnesss and instances of market failure.



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