Economics: Is A Shrinking Population Really A Problem?

 (Drivebycuriosity) - There is a lot talk about shrinking  populations. People are getting older, thanks to better medical systems and nutrition; and birthrates are falling in all developed countries. In China & Japan the population is already shrinking, Europe and even the US may follow. If we believe the Cassandras the world is doomed. I beg to differ.

First, I think a smaller population is a big win for the environment and could be the answer to global warming, another favorite subject of the doomsayers. 

Fewer people burn less energy - and they emit fewer greenhouse gases. Fewer people also eat less; therefore the incentive to destroy forests, to gain more land for farming, becomes weaker and the problem of over-fishing disappears.

A shrinking population also slows down the trend of turning forests & meadows into the sprawl: fewer people stops the trend of constructing more and more one-family houses, streets, strip malls, store houses & parking places. A shrinking population makes the world greener & cleaner!

A smaller population is also the answer to another doomster alert: "The robots are coming" And: "Automation will destroy our jobs!"  (" thehill). Both trends are mostly compensating each other: A falling demand for workers, thanks to automation, compensates a declining supply by shrinking populations.

 

Industrial Revolution 

Machines have been replacing labor for many centuries. In the middle ages wind & water mills already substituted human & animal labor. In the 18th century followed steam power, starting the industrial revolution. In the recent centuries the ongoing automation process has been raising productivity of labor considerably - and the progress has been accelerating. 

Artificial Intelligence (AI) is raising the productivity of labor even even further, reducing the demand for human workers even more. DeepSeek, the newest incarnation of the technological progress, is another step in the ongoing progress to more productivity. Microsoft CEO Satya Nadella claims that Moore´s law is "working in hyperdrive" (finance.yahoo ).

And there is more: science is making exponential advancements in the field of robotics and artificial intelligence and will support the economy and the labor markets in the coming decades. 

      Less Work, More Income

Today even farmers are using robots, for instance for harvesting strawberries or milking cows (wikipedia). Drones are being used in warehouses and yards for inventory management. Robots also help restaurants to deal with the scarcity of labor.  

"Domino’s Pizza Inc. is putting in place equipment and technology that reduce the amount of labor that is required to produce our dough balls", reports time.com. 3D-printers are also replacing workers, even in construction. "A 3D printer can build the walls of a house in as little as two days versus weeks or months with traditional construction materials" notices today.com.  

 A study by economists John G. Fernald and Charles I. Jones from Stanford & the Federal Reserve Bank of San Francisco claims that "it becomes possible to replace more and more of the labor tasks with capital" (robinhanson ). Fernald & Jones define capital as physical capital (machines including robots & computers), plus human capital (knowledge & skills) plus discovery of new ideas (inventions like computer, internet etc.). According to them "artificial intelligence and machine learning could allow computers and robots to increasingly replace labor in the production function for goods", meaning that the society can produce more things without increasing hours worked or even with a shrinking labor force. As a result the growth rate of income per person and the long-run growth rate (now around 2%) will rise as well: "The possibility that artificial intelligence will allow machines to replace workers to some extent could lead to higher growth in the future.

 

                 Universal Basic Income

Naive observers claim that a shrinking population reduces the demand for goods & services and will destroy many markets and businesses (noahpinion). These pessimists ignore that demand is the number of potential buyers multiplied with the purchasing power per capita. Thanks to the accelerating technological progress the purchasing power per capita is rising and will overcompensate the shrinking number of consumers.

We can learn from history: In England the bubonic plague (1348 Black Death ) reduced the English population by about 30%. As a result the living standard of the survivors climbed! The reduced workforce caused higher salaries and the diminished population lowered the demand for food and cut food prices ( driveby).

I reckon that technological progress leads to:

    - rising salaries (for those still working), 

    - climbing dividend incomes and stock market gains 

which will raise the purchasing power of most people - enough to compensate the shrinking number of buyers. Even those who don`t invest in the stock market may participate via pension funds and insurance investments. 

The productivity gains will finally translate into higher tax revenues for the governments (by taxing company profits, dividends & stock market gains). Some day a much greater part of goods & services will be produced by robots and other machines. Then fewer people may work than today and many things will cost less. Then the time could come for an universal basic income, paid to everybody, and financed by productivity gains delivered with automation (driveby ).