Business Maverick


After the Bell: Africa’s population growth will blow your mind

After the Bell: Africa’s population growth will blow your mind

As a subject, population figures seem only mildly interesting. But sometime in the not-too-distant future, they are going to be very significant from a geopolitical point of view.

These are strange days and one takes one’s entertainment where one finds it. For me, it means taking a break from the world occasionally by reading some extremely funny subreddits on the social media platform Reddit. One of my favourites is called r/mildlyinteresting.

In a world where everything seems to scream at you, it’s nice to know there are other people out there who are interested in things that are only mildly interesting. The subgroup includes things like people who post pictures of a hotel that changes the lift mat three times a day, from the one in the morning that says Good Morning, to the one at midday that says Good Afternoon, and then Good Evening. And so on. Things that are only mildly interesting are curiously funny.

The New York Times published a story this week that there are now 10 million empty homes in Japan, which is of course a consequence of a declining population. I can’t decide whether this is mildly interesting or actually interesting. The argument in favour of this fact being mildly interesting is that over the years, we have seen many population growth catastrophists.

This trend started with Thomas Malthus, who at the turn of the 18th century calculated that world population was growing exponentially and food supply was growing in a linear fashion. Eventually, he argued, there would be mass starvation. The part Malthus got right, of course, was population increase, which has indeed grown at an exponential rate. The part that he got wrong is that resources have grown exponentially too. 

But this didn’t stop population catastrophism, which has returned sporadically, and for some reason was particularly popular in the 1970s, so much so that China pulled an extreme version into policy, adopting the one-child policy. But for various reasons, these theories have proved false. Productivity has increased disproportionately; scientific progress in the efficiency and production of food has been extraordinary. And then there is the thing academics and politicians don’t like to talk about: the gradual adoption of free markets around the world has massively improved global food production.

Still, population growth is just eye-popping. It took all of human history until around 1800 for the world population to reach 1 billion people. The fifth billion happened in only 13 years. And yet, for all that, although some areas of the world are very crowded, the global average population density is still around 30 people per square kilometre.

And now we have a new phenomenon, as The New York Times article suggests: countries with sharply declining populations. The overall global fertility rate is coming down at a very fast rate now. India has just overtaken China as the world’s most populous nation with about 1.4 billion people, but it’s possible that China’s population will be only about 700 million by 2100. Global population, now around 8 billion, could peak around the same time at a little over 10 billion, and start declining.

Despite the concerns about the effects of climate change and so on, population growth is probably less of a concern than the catastrophists would have us believe – or at least I think so. But there is an argument that this is not all “mildly interesting” but actually “very interesting”, which is particularly true if you look at population growth from a geo-political point of view. 

Population size and geopolitical heft do somewhat overlap. The reason is partly that economic prowess tends to follow – often with huge lags and sometimes not at all – population size. The whole standoff between the US and China at the moment is based partly on the competition for global economic dominance because, for the first time, the US and China are roughly the same size economically.

And you know where this is particularly relevant? Here, in Africa. There is no place on Earth growing as fast as Africa in terms of population. These increases seem to appear out of nowhere because they are gradual. But when you look at the numbers, it is amazing.

For example, test your general knowledge quickly: 1) Place these three countries in order of population size: SA, Tanzania and the DRC. 2) By what year will Tanzania’s population outnumber the UK’s? 3) When will SA’s population be greater than Italy’s? 4) Are Africa’s five biggest countries larger than Europe’s five biggest countries in total population size, and if so by how much?

Of course, you knew the answers: the DRC is the biggest, Tanzania second, and SA third. Tanzania overtakes the UK in about five years; SA overtakes the UK in around 2040, assuming the UK’s growth rate doesn’t fall further, which it most likely will. Question 3 is a trick question: SA is already larger than Italy, Europe’s fourth-largest country. And Africa’s five largest countries – Nigeria, Ethiopia, Egypt, the DRC and Tanzania – have populations around twice that of Europe’s top five, Germany, the UK, France, Italy and Spain.

Of course, size does not equate to economic prowess; the US is around the same size economically as China while it has a quarter of the population. Yet, answering these questions, it helps to explain why African countries are growing economically as fast as they are. And why their social problems are increasing at a frenetic rate. 

Still, before catastrophism takes over once more, it’s worth noting that extreme poverty is now falling fast in Africa. By one count, around 56% of Africans lived in extreme poverty, which was measured in 2017 at around $2.15 per day. That proportion is currently around 35%. That is an amazing decline, although with population increasing so fast, the absolute number of Africans living in extreme poverty is probably still increasing.

All in all, when you think about it, population growth numbers are much more than “mildly interesting”, but they don’t tell the full story. Sometime in the not-too-distant future, this is all going to be very significant from a geopolitical point of view. BM/DM


Comments - Please in order to comment.

  • David Walker says:

    Thank you for addressing this very important question. We add an extra 80 million people to the planet every single year ie about the population of Germany. And most of those are added in poor countries in sub-Saharan Africa. All those people need natural resources. What the article does not mention is the impact the enormous human population is having on the natural world. Wildlife is in decline everywhere, forests are shrinking, the oceans are acidifying, freshwater species are collapsing, and the world is warming. All this is a direct consequence of both human population and economic growth. We need to urgently bring an end to human population expansion, both for our benefit and what is left of the natural world. Do we want to live in a South Africa of 100 million people?

  • charlesbotha says:

    Building homes is not a very good business to be in Japan….

  • Gordon Bentley says:

    To quote Tim Cohen on ‘population growth’, daily maverick article/2023-04-19; “This trend started with Thomas Malthus, who at the turn of the 18th century calculated that world population was growing exponentially and food supply was growing in a linear fashion. Eventually, he argued, there would be mass starvation.”

    Be afraid Africa, BE VERY AFRAID.
    Consider this Scenario: An overpopulated country where population growth has exceeded the supply of all natural resources.
    1) Clean drinking water is unobtainable for many species. Most species, including Mankind, cannot do without water for any length of time. Imagine a water-crazed nation, where all species will fight and kill for water…
    2) Food is unobtainable for many species. Most species, including Mankind, cannot do without food for any length of time. Imagine a starving-crazed nation, where all species will fight and kill for food.
    3) Living space is unobtainable for many species. Imagine a living space-crazed nation where all species will fight and kill for suitable living space.
    4) The species, most likely, to survive will be mankind – who, for a while, will inherit a waste land on a wasted planet with no natural resources for a long time. Most other species will probably all have been eaten by Mankind. Who may have to meantime to resort to cannibalism to survive.
    The readers are welcome to carry this scenario on for themselves to a sustainable solution in many years time.

    Think about it. Not pleasant.

  • Previous comments have made important points in response to this rather blinkered and bland article. Yes, the planet can support still more human lives, but at what cost? The cost of wildlife and wilderness, the cost of natural resources, and the cost of quality of life. And yes, the trends that will slow and perhaps even reverse population growth may already have begun, but the juggernaut of human expansion will take time to stop and in that time it can still do untold damage. It is already long overdue that human consciousness change in favour of a much better balance between humanity, its numbers and its behaviour, and the rest of the planet.

    • Gordon Bentley says:

      Hardly a blinkered and bland article, James?!

      It is one of the most important issues which faces all species, including you and I and our descendants. AND which could cause untold misery and the EXTINCTION of most present life-forms on earth, alive today.

      That is a BIG issue to me.

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