In 1798, a 32-year-old British economist anonymously published a lengthy pamphlet criticizing the views of the Utopians who believed that life could and would definitely improve for humans on earth. The hastily written text, An Essay on the Principle of Population as it Affects the Future Improvement of Society, with Remarks on the Speculations of Mr. Godwin, M. Condorcet, and Other Writers, was published by Thomas Robert Malthus. Born on February 14 or 17, 1766 in Surrey, England, Thomas Malthus was educated at home. His father was a Utopian and a friend of the philosopher David Hume. In 1784 he attended Jesus College and graduated in 1788; in 1791 Thomas Malthus earned his master's degree. Thomas Malthus argued that because of the natural human urge to reproduce human population increases geometrically (1, 2, 4, 16, 32, 64, 128, 256, etc.). However, food supply, at most, can only increase arithmetically (1, 2, 3, 4, 5, 6, 7, 8, etc.). Therefore, since food is an essential component to human life, population growth in any area or on the planet, if unchecked, would lead to starvation. However, Malthus also argued that there are preventative checks and positive checks on the population that slow its growth and keep the population from rising exponentially for too long, but still, poverty is inescapable and will continue. Thomas Malthus' example of population growth doubling was based on the preceding 25 years of the brand-new United States of America. Malthus felt that a young country with fertile soil like the U.S. would have one of the highest birth rates around. He liberally estimated an arithmetic increase in agricultural production of one acre at a time, acknowledging that he was overestimating but he gave agricultural development the benefit of the doubt. According to Thomas Malthus, preventative checks are those that affect the birth rate and include marrying at a later age (moral restraint), abstaining from procreation, birth control, and homosexuality. Malthus, a religious chap (he worked as a clergyman in the Church of England), considered birth control and homosexuality to be vices and inappropriate (but nonetheless practiced). Positive checks are those, according to Thomas Malthus, that increase the death rate. These include disease, war, disaster, and finally when other checks don't reduce the population, famine. Malthus felt that the fear of famine or the development of famine was also a major impetus to reduce the birth rate. He indicates that potential parents are less likely to have children when they know that their children are likely to starve. Thomas Malthus also advocated welfare reform. Recent Poor Laws had provided a system of welfare that provided an increased amount of money depending on the number of children in a family. Malthus argued that this only encouraged the poor to give birth to more children as they would have no fear that increased numbers of offspring would make eating any more difficult. Increased numbers of poor workers would reduce labor costs and ultimately make the poor even poorer. He also stated that if the government or an agency were to provide a certain amount of money to every poor person, prices would simply rise and the value of money would change. As well, since population increases faster than production, the supply would essentially be stagnant or dropping so the demand would increase and so would price. Nonetheless, he suggested that capitalism was the only economic system that could function. The ideas that Thomas Malthus developed came before the industrial revolution and focuses on plants, animals, and grains as the key components of the diet. Therefore, for Malthus, available productive farmland was a limiting factor in population growth. With the industrial revolution and the increase in agricultural production, land has become a less important factor than it was during the 18th century. Thomas Malthus printed the second edition of his Principles of Population in 1803 and produced several additional editions until the sixth edition in 1826. Malthus was awarded the first professorship in Political Economy at the East India Company's College at Haileybury and was elected to the Royal Society in 1819. He's often known today as the "patron saint of demography" and while some argue that his contributions to population studies were unremarkable, he did indeed cause population and demographics to become a topic of serious academic study. Thomas Malthus died in Somerset, England in 1834. Malthusianism is the idea that population growth is potentially exponential while the growth of the food supply or other resources is linear, which eventually reduces living standards to the point of triggering a population die off. This event, called a Malthusian catastrophe (also known as a Malthusian trap, population trap, Malthusian check, Malthusian crisis, Malthusian spectre, or Malthusian crunch) occurs when population growth outpaces agricultural production, causing famine or war, resulting in poverty and depopulation. Such a catastrophe inevitably has the effect of forcing the population (quite rapidly, due to the potential severity and unpredictable results of the mitigating factors involved, as compared to the relatively slow time scales and well-understood processes governing unchecked growth or growth affected by preventive checks) to "correct" back to a lower, more easily sustainable level.[1][2] Malthusianism has been linked to a variety of political and social movements, but almost always refers to advocates of population control.[3] These concepts derive from the political and economic thought of the Reverend Thomas Robert Malthus, as laid out in his 1798 writings, An Essay on the Principle of Population. Malthus suggested that while technological advances could increase a society's supply of resources, such as food, and thereby improve the standard of living, the resource abundance would enable population growth, which would eventually bring the per capita supply of resources back to its original level. Some economists contend that since the industrial revolution, mankind has broken out of the trap.[4][5] Others argue that the continuation of extreme poverty indicates that the Malthusian trap continues to operate.[6] Others further argue that due to lack of food availability coupled with excessive pollution, developing countries show more evidence of the trap.[7] A similar, more modern concept, is that of human overpopulation. Neo-Malthusianism is the advocacy of human population planning to ensure resources and environmental integrities for current and future human populations as well as for other species.[2] In Britain the term 'Malthusian' can also refer more specifically to arguments made in favour of preventive birth control, hence organizations such as the Malthusian League.[8] Neo-Malthusians differ from Malthus's theories mainly in their support for the use of contraception. Malthus, a devout Christian, believed that "self-control" (i.e., abstinence) was preferable to artificial birth control. He also worried that the effect of contraceptive use would be too powerful in curbing growth, conflicting with the common 18th century perspective (to which Malthus himself adhered) that a steadily growing population remained a necessary factor in the continuing "progress of society", generally. Modern neo-Malthusians are generally more concerned than Malthus with environmental degradation and catastrophic famine than with poverty. Malthusianism has attracted criticism from diverse schools of thought, including Georgists, Marxists[9] and socialists,[10] libertarians and free market enthusiasts,[11] feminists[12] and human rights advocates, characterising it as excessively pessimistic, misanthropic or inhuman.[13][14][3][15] Many critics believe Malthusianism has been discredited since the publication of Principle of Population, often citing advances in agricultural techniques and modern reductions in human fertility.[16] Some modern proponents believe that the basic concept of population growth eventually outstripping resources is still fundamentally valid, and that positive checks are still likely to occur in humanity's future if no action is taken to intentionally curb population growth.[17][18][better source needed] In spite of the variety of criticisms against it, the Malthusian argument remains a major discourse based on which national and international environmental regulations are promoted. In 1798, Thomas Malthus proposed his theory in An Essay on the Principle of Population. He argued that although human populations tend to increase, the happiness of a nation requires a like increase in food production. "The happiness of a country does not depend, absolutely, upon its poverty, or its riches, upon its youth, or its age, upon its being thinly, or fully inhabited, but upon the rapidity with which it is increasing, upon the degree in which the yearly increase of food approaches to the yearly increase of an unrestricted population."[19] However, the propensity for population increase also leads to a natural cycle of abundance and shortages:
Malthus faced opposition from economists both during his life and since. A vocal critic several decades later was Friedrich Engels.[21][22] Early historyMalthus was not the first to outline the problems he perceived. The original essay was part of an ongoing intellectual discussion at the end of the 18th century regarding the origins of poverty. Principle of Population was specifically written as a rebuttal to thinkers like William Godwin and the Marquis de Condorcet, and Malthus's own father who believed in the perfectibility of humanity. Malthus believed humanity's ability to reproduce too rapidly doomed efforts at perfection and caused various other problems. His criticism of the working class's tendency to reproduce rapidly, and his belief that this, rather than exploitation by capitalists, led to their poverty, brought widespread criticism of his theory.[23] Malthusians perceived ideas of charity to the poor, typified by Tory paternalism, were futile, as these would only result in increased numbers of the poor; these theories played into Whig economic ideas exemplified by the Poor Law Amendment Act of 1834. The Act was described by opponents as "a Malthusian bill designed to force the poor to emigrate, to work for lower wages, to live on a coarser sort of food",[24] which initiated the construction of workhouses despite riots and arson. Malthus revised his theories in later editions of An Essay on the Principles of Population, taking a more optimistic tone, although there is some scholarly debate on the extent of his revisions.[1] According to Dan Ritschel of the Center for History Education at the University of Maryland, Baltimore County,
One of the earliest critics was David Ricardo. Malthus immediately and correctly recognised it to be an attack on his theory of wages. Ricardo and Malthus debated this in a lengthy personal correspondence.[26] Another one of the 19th century critics of Malthusian theory was Karl Marx who referred to it as "nothing more than a schoolboyish, superficial plagiary of De Foe, Sir James Steuart, Townsend, Franklin, Wallace" (in Capital, see Marx's footnote on Malthus from Capital – reference below). Marx and Engels described Malthus as a "lackey of the bourgeoisie".[23] Socialists and communists believed that Malthusian theories "blamed the poor" for their own exploitation by the capitalist classes, and could be used to suppress the proletariat to an even greater degree, whether through attempts to reduce fertility or by justifying the generally poor conditions of labour in the 19th century.[citation needed] One proponent of Malthusianism was the novelist Harriet Martineau whose circle of acquaintances included Charles Darwin, and the ideas of Malthus were a significant influence on the inception of Darwin's theory of evolution.[27] Darwin was impressed by the idea that population growth would eventually lead to more organisms than could possibly survive in any given environment, leading him to theorize that organisms with a relative advantage in the struggle for survival and reproduction would be able to pass their characteristics on to further generations. Proponents of Malthusianism were in turn influenced by Darwin's ideas, both schools coming to influence the field of eugenics. Henry Fairfield Osborn Jr. advocated "humane birth selection through humane birth control" in order to avoid a Malthusian catastrophe by eliminating the "unfit".[1] Malthusianism became a less common intellectual tradition as the 19th century advanced, mostly as a result of technological increases, the opening of new territory to agriculture, and increasing international trade.[1] Although a "conservationist" movement in the United States concerned itself with resource depletion and natural protection in the first half of the twentieth century, Desrochers and Hoffbauer write, "It is probably fair to say ... that it was not until the publication of Osborn's and Vogt's books [1948] that a Malthusian revival took hold of a significant segment of the American population".[1] Modern formulationThe modern formulation of the Malthusian theory was developed by Qumarul Ashraf and Oded Galor.[28] Their theoretical structure suggests that as long as: (i) higher income has a positive effect on reproductive success, and (ii) land is limited factor of production, then technological progress has only a temporary effect in income per capita. While in the short-run technological progress increases income per capita, resource abundance created by technological progress would enable population growth, and would eventually bring the per capita income back to its original long-run level. The testable prediction of the theory is that during the Malthusian epoch technologically advanced economies were characterized by higher population density, but their level of income per capita was not different from the level in societies that are technologically backward. The Malthusian catastrophe simplistically illustrated To manage population growth with respect to food supply, Malthus proposed methods which he described as preventive or positive checks:
Malthusian theory is a recurrent theme in many social science venues. John Maynard Keynes, in Economic Consequences of the Peace, opens his polemic with a Malthusian portrayal of the political economy of Europe as unstable due to Malthusian population pressure on food supplies.[33] Many models of resource depletion and scarcity are Malthusian in character: the rate of energy consumption will outstrip the ability to find and produce new energy sources, and so lead to a crisis.[citation needed] In France, terms such as "politique malthusienne" ("Malthusian politics") refer to population control strategies. The concept of restriction of the population associated with Malthus morphed, in later political-economic theory, into the notion of restriction of production. In the French sense, a "Malthusian economy" is one in which protectionism and the formation of cartels is not only tolerated but encouraged.[citation needed] Vladimir Lenin, the leader of the Bolshevik Party and the main architect of the Soviet Union was a critic of Neo-Malthusian theory (but not of birth control and abortion in general).[34] "Neo-Malthusianism" is a concern that overpopulation as well as overconsumption may increase resource depletion and/or environmental degradation will lead to ecological collapse or other hazards.[citation needed] The rapid increase in the global population of the past century exemplifies Malthus's predicted population patterns; it also appears to describe socio-demographic dynamics of complex pre-industrial societies. These findings are the basis for neo-Malthusian modern mathematical models of long-term historical dynamics.[35] There was a general "neo-Malthusian" revival in the mid-to-late 1940s, continuing through to the 2010s after the publication of two influential books in 1948 (Fairfield Osborn's Our Plundered Planet and William Vogt's Road to Survival). During that time the population of the world rose dramatically. Many in environmental movements began to sound the alarm regarding the potential dangers of population growth.[1] In 1968, ecologist Garrett Hardin published an influential essay in Science that drew heavily from Malthusian theory. His essay, "The Tragedy of the Commons", argued that "a finite world can support only a finite population" and that "freedom to breed will bring ruin to all."[36] The Club of Rome published a book entitled The Limits to Growth in 1972. The report and the organisation soon became central to the neo-Malthusian revival.[37] Paul R. Ehrlich has been one of the most prominent neo-Malthusians since the publication of The Population Bomb in 1968. Leading ecological economist Herman Daly has acknowledged the influence of Malthus on his concept of a steady-state economy.[38]: xvi Other prominent Malthusians include the Paddock brothers, authors of Famine 1975! America's Decision: Who Will Survive? The neo-Malthusian revival has drawn criticism from writers who claim the Malthusian warnings were overstated or premature because the green revolution has brought substantial increases in food production and will be able to keep up with continued population growth.[16][39] Julian Simon, a cornucopian, has written that contrary to neo-Malthusian theory, Earth's "carrying capacity" is essentially limitless.[1] Simon argues not that there is an infinite physical amount of, say, copper, but for human purposes that amount should be treated as infinite because it is not bounded or limited in any economic sense, because: 1) known reserves are of uncertain quantity 2) New reserves may become available, either through discovery or via the development of new extraction techniques 3) recycling 4) more efficient utilization of existing reserves (e.g., "It takes much less copper now to pass a given message than a hundred years ago." [The Ultimate Resource 2, 1996, footnote, page 62]) 5) development of economic equivalents, e.g., optic fibre in the case of copper for telecommunications. Responding to Simon, Al Bartlett reiterates the potential of population growth as an exponential (or as expressed by Malthus, "geometrical") curve to outstrip both natural resources and human ingenuity.[40] Bartlett writes and lectures particularly on energy supplies, and describes the "inability to understand the exponential function" as the "greatest shortcoming of the human race". Prominent neo-Malthusians such as Paul Ehrlich maintain that ultimately, population growth on Earth is still too high, and will eventually lead to a serious crisis.[13][41] The 2007–2008 world food price crisis inspired further Malthusian arguments regarding the prospects for global food supply.[42] From approximately 2004 to 2011, concerns about "peak oil" and other forms of resource depletion became widespread in the United States, and motivated a large if short-lived subculture of neo-Malthusian "peakists".[43] A United Nations Food and Agriculture Organization study conducted in 2009[44] said that food production would have to increase by 70% over the next 40 years, and food production in the developing world would need to double[45] to feed a projected population increase from 7.8 billion to 9.1 billion in 2050. The effects of global warming (floods, droughts, and other extreme weather events) are expected to negatively affect food production, with different impacts in different regions.[46][47] The FAO also said the use of agricultural resources for biofuels may also put downward pressure on food availability.[48] Research indicates that technological superiority and higher land productivity had significant positive effects on population density but insignificant effects on the standard of living during the time period 1–1500 AD.[49] In addition, scholars have reported on the lack of a significant trend of wages in various places over the world for very long stretches of time.[5][50] In Babylonia during the period 1800 to 1600 BC, for example, the daily wage for a common laborer was enough to buy about 15 pounds of wheat. In Classical Athens in about 328 BC, the corresponding wage could buy about 24 pounds of wheat. In England in 1800 AD the wage was about 13 pounds of wheat.[5]: 50 In spite of the technological developments across these societies, the daily wage hardly varied. In Britain between 1200 and 1800, only relatively minor fluctuations from the mean (less than a factor of two) in real wages occurred. Following depopulation by the Black Death and other epidemics, real income in Britain peaked around 1450–1500 and began declining until the British Agricultural Revolution.[51] Historian Walter Scheidel posits that waves of plague following the initial outbreak of the Black Death throughout Europe had a leveling effect that changed the ratio of land to labor, reducing the value of the former while boosting that of the latter, which lowered economic inequality by making employers and landowners less well off while improving the economic prospects and living standards of workers. He says that "the observed improvement in living standards of the laboring population was rooted in the suffering and premature death of tens of millions over the course of several generations." This leveling effect was reversed by a "demographic recovery that resulted in renewed population pressure."[52] Robert Fogel published a study of lifespans and nutrition from about a century before Malthus to the 19th century that examined European birth and death records, military and other records of height and weight that found significant stunted height and low body weight indicative of chronic hunger and malnutrition. He also found short lifespans that he attributed to chronic malnourishment which left people susceptible to disease. Lifespans, height and weight began to steadily increase in the UK and France after 1750. Fogel's findings are consistent with estimates of available food supply.[53] Evidence supporting Malthusianism today can be seen in the poorer countries of the world with booming populations. In East Africa specifically, experts say that this area of the world has not yet escaped the Malthusian effects of population growth.[54] Jared Diamond in his book Collapse (2005), for example, argues that the Rwandan Genocide was brought about in part due to excessive population pressures. He argues that Rwanda "illustrates a case where Malthus's worst-case scenario does seem to have been right." Due to population pressures in Rwanda, Diamond explains that the population density combined with lagging technological advancements caused its food production to not be able to keep up with its population. Diamond claims that this environment is what caused the mass killings of Tutsi and even some Hutu Rwandans.[55] The genocide, in this instance, provides a potential example of a Malthusian trap. Some researchers contend that a British breakout occurred due to technological improvements and structural change away from agricultural production, while coal, capital, and trade played a minor role.[56] Economic historian Gregory Clark, building on the insights of Galor and Moav,[57] has argued, in his book A Farewell to Alms, that a British breakout may have been caused by differences in reproduction rates among the rich and the poor (the rich were more likely to marry, tended to have more children, and, in a society where disease was rampant and childhood mortality at times approached 50%, upper-class children were more likely to survive to adulthood than poor children.) This in turn led to sustained "downward mobility": the descendants of the rich becoming more populous in British society and spreading middle-class values such as hard work and literacy. 20th centuryGlobal deaths in conflicts since the year 1400 A chart of estimated annual growth rates in world population, 1800–2005. Rates before 1950 are annualized historical estimates from the US Census Bureau.[58] Red = USCB projections to 2025. Growth in food production has historically been greater than the population growth. Food per person increased since 1961. The graph runs up to slightly past 2010.[59] After World War II, mechanized agriculture produced a dramatic increase in productivity of agriculture and the Green Revolution greatly increased crop yields, expanding the world's food supply while lowering food prices. In response, the growth rate of the world's population accelerated rapidly, resulting in predictions by Paul R. Ehrlich, Simon Hopkins,[60] and many others of an imminent Malthusian catastrophe. However, populations of most developed countries grew slowly enough to be outpaced by gains in productivity. By the early 21st century, many technologically-developed countries had passed through the demographic transition, a complex social development encompassing a drop in total fertility rates in response to various fertility factors, including lower infant mortality, increased urbanization, and a wider availability of effective birth control. On the assumption that the demographic transition is now spreading from the developed countries to less developed countries, the United Nations Population Fund estimates that human population may peak in the late 21st century rather than continue to grow until it has exhausted available resources.[61] Recent empirical research corroborates this assumption for most of the less developed countries, with the exception of most of Sub-Saharan Africa.[62] A 2004 study by a group of prominent economists and ecologists, including Kenneth Arrow and Paul Ehrlich[63] suggests that the central concerns regarding sustainability have shifted from population growth to the consumption/savings ratio, due to shifts in population growth rates since the 1970s. Empirical estimates show that public policy (taxes or the establishment of more complete property rights) can promote more efficient consumption and investment that are sustainable in an ecological sense; that is, given the current (relatively low) population growth rate, the Malthusian catastrophe can be avoided by either a shift in consumer preferences[example needed] or public policy that induces a similar shift. According to Malthus, population doubled every 25 years (Sandmo). Population sat at less than 17 million people in the U.S in the 1850s and a century later, according to the United States Census Bureau, population had risen to 150 million. Malthus overpopulation would lead to war, famine, and diseases and in the future, society won't be able to feed every person and eventually die. Malthus theory was incorrect, however, because by the early 1900s and mid 1900s, the rise of conventional foods brought a decline to food production and efficiency increased exponentially. More supply was being produced with less work, less resources, and less time. Processed foods had much to do with it, many wives wanting to spend less time in the kitchen and instead work. This was the beginning of technological advancements adhering to food demand even in the middle of a war. Economists disregarded Malthus population theory. Because Malthus didn't factor in important roles society would have on economic growth. These factors concerned the society's need to improve their quality of life and there want for economic prosperity(Sandmo). Cultural shifts also had much to do with food production increase, and this put end to the population theory.[64][65][66] Thomas Carlyle dismissed Malthusianism as pessimistic sophistry. In Chartism (1839), he denied the possibility that "twenty-four millions" of English "working people[s]", "scattered over a hundred and eighteen thousand square miles of space", could collectively "take a resolution" to diminish the supply of labourers "and act on it". Even if they could, the ongoing influx of Irish immigrants would render their efforts redundant. Associating Malthusianism with laissez-faire, he instead advocated proactive legislation.[67] His later essay "Indian Meal" (1849) argued that maize production would remedy the failure of the potato crop as well as any prospective food shortages.[68] Karl Marx and Friedrich Engels argued that Malthus failed to recognize a crucial difference between humans and other species. In capitalist societies, as Engels put it, scientific and technological "progress is as unlimited and at least as rapid as that of population".[69] Marx argued, even more broadly, that the growth of both a human population in toto and the "relative surplus population" within it, occurred in direct proportion to accumulation.[70] Henry George in Progress and Poverty (1879) criticized Malthus's view that population growth was a cause of poverty, arguing that poverty was caused by the concentration of ownership of land and natural resources. George noted that humans are distinct from other species, because unlike most species humans can use their minds to leverage the reproductive forces of nature to their advantage. He wrote, "Both the jayhawk and the man eat chickens; but the more jayhawks, the fewer chickens, while the more men, the more chickens."[71] D. E. C. Eversley observed that Malthus appeared unaware of the extent of industrialization, and either ignored or discredited the possibility that it could improve living conditions of the poorer classes.[72] Barry Commoner believed in The Closing Circle (1971) that technological progress will eventually reduce the demographic growth and environmental damage created by civilization. He also opposed coercive measures postulated by neo-malthusian movements of his time arguing that their cost will fall disproportionately on the low-income population who are struggling already. Ester Boserup suggested that expanding population leads to agricultural intensification and development of more productive and less labor-intensive methods of farming. Thus, human population levels determines agricultural methods, rather than agricultural methods determining population.[73] Environmentalist founder of Ecomodernism, Stewart Brand, summarized how the Malthusian predictions of The Population Bomb and The Limits to Growth failed to materialize due to radical changes in fertility that peaked at a growth of 2 percent per year in 1963 globally and has since rapidly declined.[74] While short-term trends, even on the scale of decades or centuries, cannot prove or disprove the existence of mechanisms promoting a Malthusian catastrophe over longer periods, due to the prosperity of a major fraction of the human population at the beginning of the 21st century, and the debatability of the predictions for ecological collapse made by Paul R. Ehrlich in the 1960s and 1970s, some people, such as economist Julian L. Simon who wrote The Ultimate Resource which it contends is human technology and medical statistician Hans Rosling questioned its inevitability.[75] Wheat yields in developing countries since 1961, in kg/ha Largely due to effects of the "Green Revolution". In developing countries maize yields are also still rapidly rising.[76] Joseph Tainter asserts that science has diminishing marginal returns[77][incomplete short citation] and that scientific progress is becoming more difficult, harder to achieve, and more costly, which may reduce efficiency of the factors that prevented the Malthusian scenarios from happening in the past. The view that a "breakout" from the Malthusian trap has led to an era of sustained economic growth is explored by "unified growth theory".[4][78] One branch of unified growth theory is devoted to the interaction between human evolution and economic development. In particular, Oded Galor and Omer Moav argue that the forces of natural selection during the Malthusian epoch selected beneficial traits to the growth process and this growth enhancing change in the composition of human traits brought about the escape from the Malthusian trap, the demographic transition, and the take-off to modern growth.[79]
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