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Malthusianism

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Malthusianism is a theory regarding the relationship between population growth and resource availability. It suggests that human populations tend to grow at an exponential rate. This means the number of people increases very rapidly over time. In contrast, the food supply grows at a linear rate. A linear rate is a much slower, steady increase.

Malthus PL en
Malthus PL en

This imbalance creates a gap between the number of people and the resources needed to sustain them.

When the population exceeds the available resources, a Malthusian catastrophe can occur. This event is also known as a Malthusian trap or a Malthusian crisis. The theory predicts that this imbalance leads to increased poverty and inequality. As resources like food become scarce, their prices go up. Fierce competition for these dwindling resources can trigger social unrest. This unrest may result in major wars, revolutions, or widespread famine.

Wars-Long-Run-military-civilian-fatalities
Wars-Long-Run-military-civilian-fatalities

These events act as a force that corrects the population back to a lower level.

Thomas Robert Malthus proposed these ideas in his 1798 work, "An Essay on the Principle of Population." Malthus was a Reverend who wanted to address the origins of poverty. He specifically argued against thinkers like William Godwin and the Marquis de Condorcet. These men believed in the perfectibility of humanity. Malthus disagreed and believed rapid reproduction caused many societal problems. He was particularly concerned about the growing number of dependent poor people.

Thomas Robert Malthus
Thomas Robert Malthus

He even believed that indiscriminate charity could lead to national bankruptcy by encouraging more growth among the poor.

To manage population growth, Malthus identified two different types of controls. The first type is called preventive checks. These are methods that reduce fertility rates to slow population growth. Malthus suggested self-control or abstinence as the best way to do this. He was a devout Christian and condemned artificial birth control. The second type is called positive checks. These are events that shorten the human life span. Examples include plague, war, and famine.

Population curve
Population curve

These checks occur naturally when the population reaches its limit.

Many people have studied the impact of these ideas throughout history. The novelist Harriet Martineau was a supporter of Malthusian thought. Her ideas were a significant influence on Charles Darwin. Darwin was impressed by the idea that populations grow faster than their environments can support. This idea helped him develop his theory of evolution regarding the struggle for survival.

World population growth rates 1800-2005
World population growth rates 1800-2005

Later, some thinkers used these concepts to support the field of eugenics, which is now widely criticized.

Some economists believe that humanity escaped the Malthusian trap during the Industrial Revolution. They argue that new technologies allowed food production to keep pace with people. However, other scholars argue that extreme poverty still exists today. They suggest the trap continues to operate in some parts of the world. Some researchers point to a lack of food and excessive pollution in developing countries. They see these as signs that the Malthusian cycle is still active.

Prevalence of undernourishment (2022–2024 average)
Prevalence of undernourishment (2022–2024 average)

A modern version of this theory is called Neo-Malthusianism. Neo-Malthusians focus more on environmental degradation and resource planning. They advocate for human population planning to protect the planet for future generations. Unlike the original theory, Neo-Malthusians generally support the use of birth control.

Oded Galor pic
Oded Galor pic

They are often more concerned with the health of the entire ecosystem than with just poverty. Modern researchers Quamrul Ashraf and Oded Galor have also developed new models. Their work suggests that technological progress may only provide a temporary increase in wealth before population growth catches up again.

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🖼️ Images & Media (11)
File:Thomas Robert Malthus.jpg
Thomas Robert Malthus.jpg
File:Population curve.svg
Population curve.svg
File:Oded Galor pic.jpg
Oded Galor pic.jpg
File:Malthus PL en.svg
Malthus PL en.svg
File:World population by region projected to 2100 (HYDE and UN (with projections to 2100)), OWID.svg
World population by region projected to...
File:Prevalence of undernourishment (2022–2024 average).svg
Prevalence of undernourishment (2022–2024...
File:Wars-Long-Run-military-civilian-fatalities.png
Wars-Long-Run-military-civilian-fatalities.png
File:Food production per capita.svg
Food production per capita.svg
File:World population supported by synthetic nitrogen fertilizers, OWID.svg
World population supported by synthetic...
File:World population growth rates 1800-2005.png
World population growth rates 1800-2005.png
File:Wheat yields in Least Developed Countries.svg
Wheat yields in Least Developed Countries.svg
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