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This article is about the sociological concept. For the novel, see Unintended Consequences (novel).
"Law of unintended consequences" redirects here. For the Wikipedia policy about law of unintended consequences, see Wikipedia:Conflict of interest § Law of unintended consequences.

An erosion gully in Australia caused by rabbits, an unintended consequence of their introduction as game animals

In the social sciences, unintended consequences (sometimes unanticipated consequences or unforeseen consequences, more colloquially called knock-on effects) are outcomes of a purposeful action that are not intended or foreseen. The term was popularized in the 20th century by American sociologist Robert K. Merton.[1]

Unintended consequences can be grouped into three types:

  • Unexpected benefit: A positive unexpected benefit (also referred to as luck, serendipity, or a windfall).
  • Unexpected drawback: An unexpected detriment occurring in addition to the desired effect of the policy (e.g., while irrigation schemes provide people with water for agriculture, they can increase waterborne diseases that have devastating health effects, such as schistosomiasis).
  • Perverse result: A perverse effect contrary to what was originally intended (when an intended solution makes a problem worse).

History

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John Locke

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The idea of unintended consequences dates back at least to John Locke who discussed the unintended consequences of interest rate regulation in his letter to Sir John Somers, Member of Parliament.[2]

Adam Smith

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The idea was also discussed by Adam Smith, the Scottish Enlightenment, and consequentialism (judging by results).[3]

The invisible hand theorem is an example of the unintended consequences of agents acting in their self-interest. As Andrew S. Skinner puts it:

"The individual undertaker (entrepreneur), seeking the most efficient allocation of resources, contributes to overall economic efficiency; the merchant's reaction to price signals helps to ensure that the allocation of resources accurately reflects the structure of consumer preferences; and the drive to better our condition contributes to economic growth."[4]

Marx and Engels

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Influenced by 19th century positivism[5] and Charles Darwin's evolution, for both Friedrich Engels and Karl Marx, the idea of uncertainty and chance in social dynamics (and thus unintended consequences beyond results of perfectly defined laws) was only apparent, (if not rejected) since social actions were directed and produced by deliberate human intention.[6][7]

While discerning between the forces that generate changes in nature and those that generate changes in history in his discussion of Ludwig Feuerbach, Friedrich Engels touched on the idea of (apparent) unintended consequences:

In nature [...] there are only blind, unconscious agencies acting upon one another, [...] In the history of society, on the contrary, the actors are all endowed with consciousness, are men acting with deliberation or passion, working towards definite goals; nothing happens without a conscious purpose, without an intended aim. [...] For here, also, on the whole, in spite of the consciously desired aims of all individuals, accident apparently reigns on the surface. That which is willed happens but rarely; in the majority of instances the numerous desired ends cross and conflict with one another, or these ends themselves are from the outset incapable of realization, or the means of attaining them are insufficient. Thus the conflicts of innumerable individual wills and individual actions in the domain of history produce a state of affairs entirely analogous to [...] the realm of unconscious nature. The ends of the actions are intended, but the results which actually follow from these actions are not intended; or when they do seem to correspond to the end intended, they ultimately have consequences quite other than those intended. Historical events thus appear on the whole to be likewise governed by chance. But where on the surface accident holds sway, there actually it is always governed by inner, hidden laws, and it is only a matter of discovering these laws.

— Ludwig Feuerbach and the End of Classical German Philosophy (Ludwig Feuerbach und der Ausgang der klassischen deutschen Philosophie), 1886.[8]

For his part, for Karl Marx what can be understood as unintended consequences are actually consequences that should be expected but are obtained unconsciously. These consequences (that no one consciously sought) would be (in the same way as it is for Engels[9][10]) product of conflicts that confront actions from countless individuals. The deviation between the original intended goal and the product derived from conflicts would be a marxist equivalent to «unintended consequences.»[11]

This social conflicts would happen as a result of a competitive society, and also lead society to sabotage itself and prevent historical progress.[12] Thus, historical progress (in Marxist terms) should eliminate these conflicts and make unintended consequences predictable.[13]

Austrian School

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Unintended consequences are a common topic of study and commentary for the Austrian school of economics given its emphasis on methodological individualism. This is to such an extent that unexpected consequences can be considered as a distinctive part of Austrian tenets.[14]

Carl Menger

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In "Principles of Economics", Austrian school founder Carl Menger (1840 - 1921) noted that the relationships that occur in the economy are so intricate that a change in the condition of a single good can have ramifications beyond that good. Menger wrote:

If it is established that the existence of human needs capable of satisfaction is a prerequisite of goods-character [...] This principle is valid whether the goods can be placed in direct causal connection with the satisfaction of human needs, or derive their goods-character from a more or less indirect causal connection with the satisfaction of human needs. [...]
Thus quinine would cease to be a good if the diseases it serves to cure should disappear, since the only need with the satisfaction of which it is causally connected would no longer exist. But the disappearance of the usefulness of quinine would have the further consequence that a large part of the corresponding goods of higher order would also be deprived of their goods-character. The inhabitants of quinine-producing countries, who currently earn their livings by cutting and peeling cinchona trees, would suddenly find that not only their stocks of cinchona bark, but also, in consequence, their cinchona trees, the tools and appliances applicable only to the production of quinine, and above all the specialized labor services, by means of which they previously earned their livings, would at once lose their goods-character, since all these things would, under the changed circumstances, no longer have any causal relationship with the satisfaction of human needs.

— Principles of Economics (Grundsätze der Volkswirtschaftslehre), 1871.[15]

Friedrich Hayek and Catallactics

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Economist and philosopher Friedrich Hayek (1899 – 1992) is another key figure in the Austrian School of Economics who is notable for his comments on unintended consequences.[16]

In "The Use of Knowledge in Society" (1945) Hayek argues that a centrally planned economy cannot reach the level of efficiency of the free market economy because the necessary (and pertinent) information for decision-making is not concentrated but dispersed among a vast number of agents.[17] Then, for Hayek, the price system in the free market allows the members of a society to anonymously coordinate for the most efficient use of resources, for example, in a situation of scarcity of a raw material, the price increase would coordinate the actions of an uncountable amount of individuals "in the right direction".[18]

The development of this system of interactions would allow the progress of society,[19] and individuals would carry it out without knowing all its implications, given the dispersion (or lack of concentration) of information.[20]

The implication of this is that the social order (which derives from social progress, which in turn derives from the economy),[21] would be result of a spontaneous cooperation and also an unintended consequence,[10] being born from a process of which no individual or group had all the information available or could know all possible outcomes.

In the Austrian school, this process of social adjustment that generates a social order in an unintendedly way is known as catallactics.[22]

For Hayek and the Austrian School, the number of individuals involved in the process of creating a social order defines the type of unintended consequence:[23]

  1. If the process involves interactions and decision making of as many individuals (members of a society) as possible (thus gathering the greatest amount of knowledge dispersed among them), this process of "catallaxy" will lead to unexpected benefits (a social order and progress)
  2. On the other hand, attempts by individuals or limited groups (who lack all the necessary information) to achieve a new or better order, will end in unexpected drawbacks.

Robert K. Merton

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Sociologist Robert K. Merton popularised this concept in the twentieth century.[1][24][25][26]

In "The Unanticipated Consequences of Purposive Social Action" (1936), Merton tried to apply a systematic analysis to the problem of unintended consequences of deliberate acts intended to cause social change. He emphasized that his term purposive action, "[was exclusively] concerned with 'conduct' as distinct from 'behavior.' That is, with action that involves motives and consequently a choice between various alternatives".[26] Merton's usage included deviations from what Max Weber defined as rational social action: instrumentally rational and value rational.[27] Merton also stated that "no blanket statement categorically affirming or denying the practical feasibility of all social planning is warranted."[26]

Everyday usage

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More recently, the law of unintended consequences has come to be used as an adage or idiomatic warning that an intervention in a complex system tends to create unanticipated and often undesirable outcomes.[28][29][30][31]

Akin to Murphy's law, it is commonly used as a wry or humorous warning against the hubristic belief that humans can fully control the world around them, not to presuppose a belief in predestination or a lack or a disbelief in that of free will.

Causes

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Possible causes of unintended consequences include the world's inherent complexity (parts of a system responding to changes in the environment), perverse incentives, human stupidity, self-deception, failure to account for human nature, or other cognitive or emotional biases. As a sub-component of complexity (in the scientific sense), the chaotic nature of the universe—and especially its quality of having small, apparently insignificant changes with far-reaching effects (e.g., the butterfly effect)—applies.

In 1936, Robert K. Merton listed five possible causes of unanticipated consequences:[32]

  • Ignorance, making it impossible to anticipate everything, thereby leading to incomplete analysis.
  • Errors in analysis of the problem or following habits that worked in the past but may not apply to the current situation.
  • Immediate interests overriding long-term interests.
  • Basic values which may require or prohibit certain actions even if the long-term result might be unfavourable (these long-term consequences may eventually cause changes in basic values).
  • Self-defeating prophecy, or, the fear of some consequence which drives people to find solutions before the problem occurs, thus the non-occurrence of the problem is not anticipated.

In addition to Merton's causes, psychologist Stuart Vyse has noted that groupthink, described by Irving Janis, has been blamed for some decisions that result in unintended consequences.[33]

Types

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Unexpected benefits

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The creation of "no-man's lands" during the Cold War, in places such as the border between Eastern and Western Europe, and the Korean Demilitarized Zone, has led to large natural habitats.[34][35][36]

Sea life on the wreck of the sunken USS Oriskany

The sinking of ships in shallow waters during wartime has created many artificial coral reefs, which can be scientifically valuable and have become an attraction for recreational divers. This led to the deliberate sinking of retired ships for the purpose of replacing coral reefs lost to global warming and other factors.[37][38][39][40][41]

In medicine, most drugs have unintended consequences ('side effects') associated with their use. However, some are beneficial. For instance, aspirin, a pain reliever, is also an anticoagulant that can help prevent heart attacks and reduce the severity and damage from thrombotic strokes.[42] The existence of beneficial side effects also leads to off-label use—prescription or use of a drug for an unlicensed purpose. Famously, the drug Viagra was developed to lower blood pressure, with its use for treating erectile dysfunction being discovered as a side effect in clinical trials.

Unexpected drawbacks

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The implementation of a profanity filter by AOL in 1996 had the unintended consequence of blocking residents of Scunthorpe, North Lincolnshire, England, from creating accounts because of a false positive.[43] The accidental censorship of innocent language, known as the Scunthorpe problem, has been repeated and widely documented.[44][45][46]

In 1990, the Australian state of Victoria made safety helmets mandatory for all bicycle riders. While there was a reduction in the number of head injuries, there was also an unintended reduction in the number of juvenile cyclists—fewer cyclists obviously leads to fewer injuries, all else being equal. The risk of death and serious injury per cyclist seems to have increased, possibly because of risk compensation,[47] or due to invisibilisation of cyclists. (the more a transportation method is uncommonly sighted, the likelier it could be deemed to be accident prone)

Research by Vulcan, et al. found that the reduction in juvenile cyclists was because the youths considered wearing a bicycle helmet unfashionable.[48] A health-benefit model developed at Macquarie University in Sydney suggests that, while helmet use reduces "the risk of head or brain injury by approximately two-thirds or more", the decrease in exercise caused by reduced cycling as a result of helmet laws is counterproductive in terms of net health.[49]

Prohibition in the 1920s United States, originally enacted to suppress the alcohol trade, drove many small-time alcohol suppliers out of business and consolidated the hold of large-scale organized crime over the illegal alcohol industry. Since alcohol was still popular, criminal organisations producing alcohol were well-funded and hence also increased their other activities. Similarly, the War on Drugs, intended to suppress the illegal drug trade, instead increased the power and profitability of drug cartels who became the primary source of the products.[50][51][52][53]

In CIA jargon, "blowback" describes the unintended, undesirable consequences of covert operations, such as the funding of the Afghan Mujahideen and the destabilization of Afghanistan contributing to the rise of the Taliban and Al-Qaeda.[54][55][56]

The introduction of exotic animals and plants for food, for decorative purposes, or to control unwanted species often leads to more harm than good done by the introduced species.

  • The introduction of rabbits in Australia and New Zealand for food was followed by an explosive growth in the rabbit population; rabbits have become a major feral pest in these countries.[57][58]
  • Cane toads, introduced into Australia to control canefield pests, were unsuccessful and have become a major pest in their own right.
  • Kudzu, introduced to the US as an ornamental plant in 1876[59] and later used to prevent erosion in earthworks, has become a major problem in the Southeastern United States. Kudzu has displaced native plants and has effectively taken over significant portions of land.[60][61]

The protection of the steel industry in the United States reduced production of steel in the United States, increased costs to users, and increased unemployment in associated industries.[62][63]

Perverse results

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See also: Perverse incentive and Perverse subsidies

In 2003, Barbra Streisand unsuccessfully sued Kenneth Adelman and Pictopia.com for posting a photograph of her home online.[64] Before the lawsuit had been filed, only 6 people had downloaded the file, two of them Streisand's attorneys.[65] The lawsuit drew attention to the image, resulting in 420,000 people visiting the site.[66] The Streisand Effect was named after this incident, describing when an attempt to censor or remove a certain piece of information instead draws attention to the material being suppressed, resulting in the material instead becoming widely known, reported on, and distributed.[67]

Passenger-side airbags in motorcars were intended as a safety feature, but led to an increase in child fatalities in the mid-1990s because small children were being hit by airbags that deployed automatically during collisions. The supposed solution to this problem, moving the child seat to the back of the vehicle, led to an increase in the number of children forgotten in unattended vehicles, some of whom died under extreme temperature conditions.[68]

Risk compensation, or the Peltzman effect, occurs after implementation of safety measures intended to reduce injury or death (e.g. bike helmets, seatbelts, etc.). People may feel safer than they really are and take additional risks which they would not have taken without the safety measures in place. This may result in no change, or even an increase, in morbidity or mortality, rather than a decrease as intended.

According to an anecdote, the British government, concerned about the number of venomous cobra snakes in Delhi, offered a bounty for every dead cobra. This was a successful strategy as large numbers of snakes were killed for the reward. Eventually, enterprising people began breeding cobras for the income. When the government became aware of this, they scrapped the reward program, causing the cobra breeders to set the now-worthless snakes free. As a result, the wild cobra population further increased. The apparent solution for the problem made the situation even worse, becoming known as the Cobra effect.

Theobald Mathew's temperance campaign in 19th-century Ireland resulted in thousands of people vowing never to drink alcohol again. This led to the consumption of diethyl ether, a much more dangerous intoxicant—owing to its high flammability—by those seeking to become intoxicated without breaking the letter of their pledge.[dubious – discuss][69][70]

It was thought that adding south-facing conservatories to British houses would reduce energy consumption by providing extra insulation and warmth from the sun. However, people tended to use the conservatories as living areas, installing heating and ultimately increasing overall energy consumption.[71]

A reward for lost nets found along the Normandy coast was offered by the French government between 1980 and 1981. This resulted in people vandalizing nets to collect the reward.[72]

Beginning in the 1940s and continuing into the 1960s, the Canadian federal government gave Quebec $2.75 per day per psychiatric patient for their cost of care, but only $1.25 a day per orphan. The perverse result is that the orphan children were diagnosed as mentally ill so Quebec could receive the larger amount of money. This psychiatric misdiagnosis affected up to 20,000 people, and the children are known as the Duplessis Orphans in reference to the Premier of Quebec who oversaw the scheme, Maurice Duplessis.[73][74][75][76]

There have been attempts to curb the consumption of sugary beverages by imposing a tax on them. However, a study found that the reduced consumption was only temporary. Also, there was an increase in the consumption of beer among households.[77]

The New Jersey Childproof Handgun Law, which was intended to protect children from accidental discharge of firearms by forcing all future firearms sold in New Jersey to contain "smart" safety features, has delayed, if not stopped entirely, the introduction of such firearms to New Jersey markets. The wording of the law caused significant public backlash,[78] fuelled by gun rights lobbyists,[79][80] and several shop owners offering such guns received death threats and stopped stocking them.[81][82] In 2014, 12 years after the law was passed, it was suggested the law be repealed if gun rights lobbyists agree not to resist the introduction of "smart" firearms.[83]

Drug prohibition can lead drug traffickers to prefer stronger, more dangerous substances, that can be more easily smuggled and distributed than other, less concentrated substances.[84]

Televised drug prevention advertisements may lead to increased drug use.[85]

Increasing usage of search engines, also including recent image search features, has contributed in the ease of which media is consumed. Some abnormalities in usage may have shifted preferences for pornographic film actors, as the producers began using common search queries or tags to label the actors in new roles.[86]

The passage of the Stop Enabling Sex Traffickers Act has led to a reported increase in risky behaviors by sex workers as a result of quashing their ability to seek and screen clients online, forcing them back onto the streets or into the dark web. The ads posted were previously an avenue for advocates to reach out to those wanting to escape the trade.[87]

The use of precision guided munitions meant to reduce the rate of civilian casualties encouraged armies to narrow their safety margins, and increase the use of deadly force in densely populated areas. This in turn increased the danger to uninvolved civilians, who in the past would have been out of the line of fire because of armies' aversion of using higher-risk weaponry in densely populated areas.[88] The perceived ability to operate precision weaponry from afar (where in the past heavy munitions or troop deployment would have been needed) also led to the expansion of the list of potential targets.[88] As put by Michael Walzer: "Drones not only make it possible for us to get at our enemies, they may also lead us to broaden the list of enemies, to include presumptively hostile individuals and militant organizations simply because we can get at them–even if they aren't actually involved in attacks against us."[89] This idea is also echoed by Grégoire Chamayou: "In a situation of moral hazard, military action is very likely to be deemed 'necessary' simply because it is possible, and possible at a lower cost."[90][page needed]

Other

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According to Lynn White, the invention of the horse stirrup enabled new patterns of warfare that eventually led to the development of feudalism (see Stirrup Thesis).[91]

Perverse consequences of environmental intervention

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Most modern technologies have negative consequences that are both unavoidable[dubious – discuss] and unpredictable.[dubious – discuss] For example, almost all environmental problems, from chemical pollution to global warming, are the unexpected consequences of the application of modern technologies. Traffic congestion, deaths and injuries from car accidents, air pollution, and global warming are unintended consequences of the invention and large scale adoption of the automobile. Hospital infections are the unexpected side-effect of antibiotic resistance, and even human population growth leading to environmental degradation is the side effect of various technological (i.e., agricultural and industrial) revolutions.[92]

Because of the complexity of ecosystems, deliberate changes to an ecosystem or other environmental interventions will often have (usually negative) unintended consequences. Sometimes, these effects cause permanent irreversible changes. Examples include:

A Chinese boy with a red neckerchief aims a slingshot to an off-frame overhead target. A Chinese girl looks at the target as well. There is a Chinese village inthe background. There is a Chinese slogan "大家都来打麻雀" in red letters at the footer.
Chinese poster encouraging children to attack sparrows.
  • During the Four Pests campaign, Maoist China ordered the killing of sparrows, as well as rats, flies, and mosquitoes. Chinese leaders later realized that sparrows ate a large amount of insects. Rice yields after the campaign were substantially decreased; the campaign was one of the causes of the Great Chinese Famine.[93][94][95]
  • During the Great Plague of London a killing of dogs and cats was ordered. If left untouched, they would have made a significant reduction in the rat population that carried the fleas which transmitted the disease.[96]
  • The installation of smokestacks to decrease pollution in local areas, resulting in spread of pollution at a higher altitude, and acid rain on an international scale.[97][98]
  • After about 1900, public demand led the US government to fight forest fires in the American West, and set aside land as national forests and parks to protect them from fires. This policy led to fewer fires, but also led to growth conditions such that, when fires did occur, they were much larger and more damaging. Modern research suggests that this policy was misguided, and that a certain level of wildfires is a natural and important part of forest ecology.[99]
  • Side effects of climate engineering to counter global warming could involve even further warming as a consequence of reflectivity-reducing afforestation or crop yield reductions and rebound effects after solar dimming measures with even more accelerated warming.[100][101]

See also

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References

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  1. ^ a b Robert K. Merton, Versatile Sociologist and Father of the Focus Group, Dies at 92, Michael T. Kaufman, The New York Times
  2. ^ John Locke, The Works of John Locke in Nine Volumes, (London: Rivington, 1824 12th ed.). Vol. 4.
  3. ^ Smith, Adam. "The Theory of Moral Sentiments". p. 93.
  4. ^ Stewart Skinner, Andrew (2012). Jürgen G. Backhaus (ed.). Handbook of the history of economic thought: insights on the founders of modern economics. New York: Springer. p. 171. ISBN 978-1-4419-8336-7. OCLC 761868679.
  5. ^ Saint-Upéry 2015, p. 146: Por supuesto, la raíz de esta posible mutación dogmática se puede identificar en la concepción de la «ciencia» de Marx, mezcla de Wissenschaft especulativa hegeliana y evolucionismo positivista típico del siglo XIX. [Of course, the root of this possible dogmatic mutation can be identified on Marx's conception of "science", a mix of speculative hegelian Wissenschaft and positivist evolutionism typical of the 19 century.]
  6. ^ Saint-Upéry 2015, p. 147: Es bien conocida la admiración de Marx y Engels por el autor de El origen de las especies y su ambición más o menos explícita de hacer para la evolución social lo que el científico británico había hecho para la evolución natural. Sin embargo, la interpretación de la selección natural por Marx era parcialmente defectiva. Reprochaba a Darwin el rol excesivo otorgado al azar en su esquema de evolución y defendía a veces en modo más bien implícito una especie de lamarckismo sociológico en el que la supuesta función político-ideológica o económica crea inevitablemente el órgano social adecuado en cada etapa del desarrollo de la humanidad. [Marx and Engels admiration for the author of On the Origin of Species and their more or less explicit ambition to do for social evolution what the british scientist did for natural evolution is well known. However, Marx's interpretation of natural selection was partially defective. He reproached Darwin for the excessive role given to chance in his scheme of evolution and defended -sometimes in a more implicit manner- a kind of sociological Lamarckism in which the supposed political-ideological or economic function inevitably creates the adequate social organ on each stage of human [historical] development.]
  7. ^ Engels 1946: In the history of society, on the contrary, the actors are all endowed with consciousness, are men acting with deliberation or passion, working towards definite goals; nothing happens without a conscious purpose, without an intended aim.
  8. ^ Engels 1946:
  9. ^ Vernon 1979, p. 69: Engels traces the occurrence of "what no one has willed" exclusively to the fact of conflict among actors
  10. ^ a b Vernon 1979, p. 63: But the unintended consequences arising from diversity of ends, as we have noted already, are sometimes seen as emphatically good; they may be seen (as in Hayek) in the light of immanent spontaneous cooperation, no less than (as in Engels) in the light of destructive contradictions.
  11. ^ Vernon 1979, p. 58: "History is made in such a way that the final result always arises from conflicts between many individual wills... Thus there are innumerable intersecting forces, an infinite series of parallelograms of forces, which give rise to one resultant-the historical event... For what each individual wills is obstructed by everyone else, and what emerges is something that no one willed. Thus past history proceeds in the manner of a natural process... "
  12. ^ Vernon 1979, p. 58: [For Marx and Engels] Unintended consequences are a feature not of "history" in general but of "past history", an expression of the inherently self-defeating tendencies of a competitive and inegalitarian society.
  13. ^ Vernon 1979, p. 58: If this is so, then we may imagine a future order in which the rational coordination of efforts brings about a course of events which will have been consciously intended.
  14. ^ O'Driscoll Jr. 2004, p. 272: As Caldwell observes, "Menger's Principle of Economics is the founding document of the Austrian School of Economics, [...]" In it, Menger developed what became "fundamental Austrian tenets: the connection between time and error; the causal-genetic or compositive methodological approach; and the notion of unintended consequences".
  15. ^ Menger 2007, pp. 64–65:
  16. ^ O'Driscoll Jr. 2004, p. 279: [Hayek's] enduring contributions to the study of the unintended consequences of human action are among his most famous achievements. By elaborating that concept, Hayek developed a theory of institutions that spans economics and politics. A full appreciation of Hayek's ideas on unintended consequences would require an essay in its.
  17. ^ Hayek 1996:The peculiar character of the problem of a rational economic order is determined precisely by the fact that the knowledge of the circumstances of which we must make use never exists in concentrated or integrated form but solely as the dispersed bits of incomplete and frequently contradictory knowledge which all the separate individuals possess. [...] It is rather a problem of how to secure the best use of resources known to any of the members of society, for ends whose relative importance only these individuals know. Or, to put it briefly, it is a problem of the utilization of knowledge which is not given to anyone in its totality.
  18. ^ Hayek 1996: The marvel is that in a case like that of a scarcity of one raw material, without an order being issued, without more than perhaps a handful of people knowing the cause, tens of thousands of people whose identity could not be ascertained by months of investigation, are made to use the material or its products more sparingly; i.e., they move in the right direction.
  19. ^ Hayek 1996:The price system is just one of those formations which man has learned to use (though he is still very far from having learned to make the best use of it) after he had stumbled upon it without understanding it. Through it not only a division of labor but also a coordinated utilization of resources based on an equally divided knowledge has become possible. [...] man has been able to develop that division of labor on which our civilization is based because he happened to stumble upon a method which made it possible.
  20. ^ Hayek 1996:As Alfred Whitehead has said in another connection, "It is a profoundly erroneous truism, [...] that we should cultivate the habit of thinking what we are doing. The precise opposite is the case. Civilization advances by extending the number of important operations which we can perform without thinking about them." This is of profound significance in the social field. We make constant use of formulas, symbols, and rules whose meaning we do not understand and through the use of which we avail ourselves of the assistance of knowledge which individually we do not possess. We have developed these practices and institutions by building upon habits and institutions which have proved successful in their own sphere and which have in turn become the foundation of the civilization we have built up.
  21. ^ Vernon 1979, p. 64: It turns out to be more difficult than may appear at first sight to define what it is that Hayek regards as the "order". Very frequently he refers to it as something "brought about" by multiple exchanges; it is something that "the market system leads to".
  22. ^ Vernon 1979, pp. 63–64: No word seems quite right as a label for this category of unintended consequences [...] "Catallaxy" is the term which Hayek offers in place of "economy": the latter word, he argues, applies more properly to an organisation such as a business enterprise, and in applying it to the order which such enterprises compose we may be led to see it as a kind of large organisation, which it is not. It is an order spontaneously brought about by multiple transactions or exchanges (katallatein: "to exchange") among organisations. It is not a willed or designed or contrived thing, like an organisational hierarchy, but the unintended outcome of many independent decision.
  23. ^ Vernon 1979, p. 64: whereas a spontaneous order rests upon decisions made locally by many actors whose aggregate knowledge is much greater than any single actor could have. Moreover, Hayek (unlike Popper) directs his objections not only against attempts to "organise" in a total or "utopian" way but also against more modest "interferences" with the order, which he alleges, always disrupt it. The role of legislation is only to provide a context of essentially general or abstract rules, rules not directed at particular ends nor imposed upon particular persons, which enable men to conduct their transactions in security. It follows necessarily that the general outcomes produced by the order are unintended. For it is no one's business to intend them
  24. ^ "Renowned Columbia Sociologist and National Medal of Science Winner Robert K. Merton Dies at 92". Columbia News.
  25. ^ Robert K. Merton Remembered Footnotes, American Sociological Association
  26. ^ a b c Merton, Robert K. (1936). "The Unanticipated Consequences of Purposive Social Action" (PDF). American Sociological Review. 1 (6): 894–904. doi:10.2307/2084615. JSTOR 2084615. Archived (PDF) from the original on April 29, 2013. Retrieved May 30, 2008.
  27. ^ Weber, Max (1978). Economy and Society. University of California Press. pp. 24–25. ISBN 978-0-520-02824-1.
  28. ^ Norton, Rob (2008). "Unintended Consequences". In David R. Henderson (ed.). Concise Encyclopedia of Economics (2nd ed.). Indianapolis: Library of Economics and Liberty. ISBN 978-0-86597-665-8. OCLC 237794267.
  29. ^ Schwartz, Victor E.; Tedesco, Rochelle M. "The Law of Unintended Consequences in Asbestos Litigation: How Efforts to Streamline the Litigation Have Fueled More Claims". Mississippi Law Journal. 71. HeinOnline: 531. Retrieved May 7, 2010.
  30. ^ Mascharka, Christopher (June 18, 1993). "28 Florida State University Law Review 2000–2001 Mandatory Minimum Sentences: Exemplifying the Law of Unintended Consequences Comment". Florida State University Law Review. 28. Heinonline.org: 935. Retrieved November 21, 2012.
  31. ^ Sims, Joe; Herman, Deborah P. "The Effect of Twenty Years of Hart-Scott-Rodino on Merger Practice: A Case Study in the Law of Unintended Consequences Applied to Antitrust Legislation". Antitrust Law Journal. 65. HeinOnline: 865. Retrieved May 7, 2010.
  32. ^ Merton, Robert K (1996). On Social Structure and Science. Heritage of Sociology Series. The University of Chicago Press. Retrieved May 16, 2018.
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