Why demography, democracy and data?
• OVERVIEW
The women who will give birth in 2040 are already alive, and what their numbers tell us about the collapse of populations, states, and everything built on the assumption of growth is the question most governments are too afraid to answer.
There is now a great deal being written about falling birthrates and ageing populations. Some of it is careful and useful. Much of it is frankly evasive. Too much still treats demographic decline as a distant policy problem, a regrettable but manageable adjustment, a desirable correction to what had seemed like overpopulation in the past. Where a response is needed, it is often presented as a trend that will somehow reverse when the right tax credit, childcare scheme, housing policy or cultural mood appears.
Perivista takes a different view. Falling, then collapsing, populations will be the central human question of the next two centuries. This will shape economics, politics, culture, migration, innovation, defence, religion, housing, cities, education, care, and the future of the state itself. Falling populations will not affect us politely, evenly, or fairly. And nothing will unfold according to the timetable of electoral politics.
This is the beginning of Perivista’s writing on population. This is an overview. It sets out the big picture up front. We will publish supporting numbers shortly, and over the coming months we will look both at the big picture and at particular countries, regions and communities.
We will look at the demographic collapse already visible in East Asia and parts of Europe; at the later but profound transition now beginning in Africa; at the West African Demographic Exception (where decline is delayed not avoided); at the migration politics that inevitably follow; at the interaction between low fertility and digital life; and at what happens to states when the steady economic growth that lubricated the post-war order disappears.
The first point is the hardest and most important: a large part of this future is already locked in. The women who will give birth in 2040, 2050 and 2060 are, apart from a few outliers, already alive or soon will be. Their numbers are known. Fertility rates can move, but they do not move as easily as governments hope. Across very different societies, richer and poorer, liberal and conservative, secular and religious, fertility has tended to fall as urbanisation, education, digital life, female employment, contraception, housing costs and individual choice reshape the conditions of family formation. Governments have tried cash payments, tax breaks, parental leave, childcare support, patriotic messaging and social pressure. None has achieved a durable reversal to replacement fertility once low fertility has become embedded.
This does not mean that the future can be predicted with precision. Prediction is, as Niels Bohr is said to have observed, difficult, especially about the future. But uncertainty is not the same as freedom from constraint. Demography is not a weather forecast. It is more like geology. Pressure builds slowly, invisibly, then the surface changes. By the time everyone can see it, the main forces have been operating for decades.
The second point is acceleration. Population decline will feel slow until it does not. A fertility rate of 1.5 is serious. A fertility rate near 1.0 is radical. A generation only half the size of the one before it does not merely reduce the population. It changes the shape of every institution built on replacement: schools, housing markets, armies, pension systems, healthcare, political parties, churches, consumer markets, universities and tax bases – even the ability of a state to control its borders and territory.
At first, the effects can be hidden by longer life expectancy, immigration, urban concentration, and the fact that capital cities still look crowded and young. Then the missing cohorts begin to move through the system. Schools close. Workforces thin. Care demands rise. Tax bases narrow. Regions empty. The future arrives as an administrative problem before it is recognised as a civilisational one. Nothing seems to happen, then everything happens at once. Responding to this is a task for leaders, not managers.
The other, worrying point is that we seem to be entering the collapse phase way sooner than policymakers predictions, where they have any. So the rate of decline in fertility in recent years seems to be speeding up. That suggests bigger problems sooner. And a longer harder climb back from the current projection than we thought (and that was hard enough).
This is why the timescale matters. The world will already look and feel different within an investment horizon: twenty-five years, perhaps, the length of a mortgage, six World Cups, or half the expected service life of an aircraft carrier. Within a full working life, the changes become larger again. Within two or three generations, if present trajectories continue in the lowest-fertility societies, the implications become severe enough to challenge the maintenance of complex social, scientific and economic systems.
We should be careful with extrapolation. It is the next level beyond lies, damned lies and statistics. Straight lines don’t hold. But the gravity of the issue is not removed by noting that long-term projections are uncertain. If anything, the opposite is true. The scale of the possible decline is so large (and accelerating) that even partial continuation of current trends will reshape the world.
When people say “something will turn up”, the right response is not reassurance. It is to ask: what, exactly? A technological breakthrough? A religious revival? A new family model? Coercive pronatalism? Artificial wombs? Radical longevity? Large-scale migration? A return to rural life? A collapse in housing costs? A cultural rejection of the smartphone? Each is possible in some form. None is yet visible at the scale needed. We will look at all of these. But (spoiler alert) so far, in recorded history, human-made policy has had very little impact on demography. The big shifts have been the result of technology: fire, agriculture, medicines which reduce child mortality (not the ones which extend life and get the headlines). .
The third point is that decline will be uneven. This is where demography becomes geopolitics. Europe, Japan and South Korea are already deep into the problem. China is entering it at enormous scale. There is no longer a meaningful demographic rivalry between India and China if the measure is young human beings. India recorded roughly 23 million births in 2025. China recorded fewer than 9 million. The 2025 Indian cohort will be more than two and a half times the size of China’s equivalent cohort. That difference will echo through those labour markets, armies, universities, consumer demand and geopolitical confidence for the rest of the century. And, of course, in the number of women available to provide the birth cohorts of the coming decades. So in India and China we will see, in the next political generation, the impacts we described above play out. And anyone who has a business plan based on Chinese consumers is just too late.
The contrast between Europe and Africa is just as stark. In 2025, Nigeria alone had more births than all of Europe including Russia. The Democratic Republic of Congo, with a population less than a third that of the United States, had more births than the US. These are not passing curiosities. They are signs of a changing human centre of gravity. These babies will grow up and become the dominant component of their age group globally. After Gen Z comes Generation Africa.
This does not mean Africa is exempt from the fertility transition. Fertility is falling there too. The question is timing. West Africa is later in the transition, and that delay matters. For several decades West Africa will be much younger than Europe, East Asia and parts of the Americas. It will export people, culture, religion, music, food, sport, ideas and political influence. Perivista calls this the West African Demographic Exception. We will return to it often, because it may be one of the most important features of the twenty-first century. If West Africa’s fertility falls rapidly, the world enters a more generalised demographic contraction quickly. If it remains higher for longer, West Africa becomes one of the principal engines of any human renewal and most global migration.
Migration is therefore not a side issue. It becomes central. Ageing societies will need workers, carers, taxpayers, soldiers, engineers, builders and nurses. They will need young people, who will be overwhelmingly African. There is a bargain to be had – young people to prevent rapid and uncontrolled contraction of the economy, but in return profound cultural, legal and economic changes to make them feel at home. Many of their voters will want an economy which can pay them pensions but will not want the social, cultural and political changes that immigration brings. That is the defining tension: migration will be economically necessary and politically toxic at the same time. One of the points we will make is that migration is not just a source of labour. It’s a source of demand. In the economics of the future it’s the collapse of demand that will herald contraction. Supply (the focus of the last hundred years) will turn out to be the easy bit.
In the first half of this century, many rich countries have focused on how to repel migrants. In the second half, many will compete to attract them, though not necessarily the same ones. The politics will not become easier. It may become harder. Countries will want labour without social change, tax revenue without pressure on housing, care workers without cultural friction, and young migrants without the political consequences of demographic replacement and democratic legitimacy. They will not get all of those things. They may get none of them. The states that manage migration honestly, competently and locally may preserve legitimacy. Those that rely on slogans will not.
The fourth point is that population decline is not happening in a neutral technological environment. It is happening in a world increasingly driven by digital systems. Indeed there is intriguing research suggesting a correlation between global data availability and collapsing birthrates, which otherwise remain unexplained. The smartphone, the platform, the feed, the identity system, the payment network, the app, the algorithm and the model now mediate more of life than any previous technology. Digital technology changes how people meet, work, learn, desire, spend, organise, compare, compete and imagine a future. It is already part of the fertility story. Recent research suggesting that smartphone adoption depresses fertility should not surprise us. A device that reorganises attention, courtship, status, sexuality, consumption and time will affect family formation.
This interaction between demographic decline and digital life is one of Perivista’s central concerns. We will write about the evidence on smartphones and fertility; about online dating and partner formation; about digital entertainment and withdrawal from social risk; about pornography, gaming and loneliness; about AI companionship; about the deskilling of ageing populations; and about the way online systems make older citizens more exposed to fraud, manipulation and dependency.
The point is not nostalgia. Modern digital life is convenient because it works. Convenience is precisely why it is powerful. People will not give up their smartphones because demographic models tell them to. Personal choice wins in fertility, and convenience wins in technology. That is why the interaction between the two is so important. It is not a moral complaint. It is a structural fact.
The fifth point is the state. Modern states, especially democratic welfare states, were built for growth. The post-war bargain rested on young and growing populations, rising productivity, mild inflation, expanding tax bases and broad confidence that tomorrow would be richer than today. That growth lubricated politics. It allowed governments to promise more, borrow more, build more, employ more and absorb mistakes.
Population decline removes that lubricant. Aged populations need more and contribute less. They require healthcare, pensions, social care, housing adaptation, fraud protection and physical security. They are also politically powerful for a time, because they vote. But their power glows bright and then dims as they die. Behind them are smaller cohorts, carrying larger obligations, in economies where individual need and demand may be greater, but collective, population level demand weaker, innovation harder to finance, and tax bases more fragile.
This is where demographic decline meets digital state weakness. Governments already struggle to police online life. The scale is too large, encryption too widespread, commercial and criminal innovation too fast, and jurisdiction based on real estate too analogue for a borderless digital world. As populations age and tax bases weaken, the state will be asked to do more with less: protect people from cybercrime, fund care, secure borders, manage migration, regulate AI, maintain infrastructure, defend territory, and preserve public trust. Something will give, maybe all at once. We always argue that the internet weakens the state. Demographically, it weakens society too.
Tax will become a submerged crisis, then a dominant one. Income tax depends on work. Profit taxes depend on firms generating taxable profits in places where governments can reach them. Capital taxes depend on asset values. But in a world where value is increasingly intangible, mobile, digital and automated, and where employment may be weaker, the old tax machinery will creak. Governments will try to tax data, intellectual assets, platforms, land, inheritance and consumption. Some of this will work. Much of it will be evaded, ignored, arbitraged or politically resisted. Demographically, demand outstrips the state’s ability to provide services. Economically, the same forces erode the underlying economy. Expenses up; income down. A Micawber moment beckons, probably as government debt markets fail.
Order will become the deeper question. Governments exist, in the Hobbesian bargain, to tax in return for order. If the state cannot protect citizens online, cannot fund the old, cannot house the young, cannot secure borders honestly, and cannot offer a credible story of national continuity, what exactly is left of that bargain? This is not a prediction of collapse. It is a warning that the conditions of legitimacy are changing.
There will also be strange reversals. In some places pressure on land, food, water and the environment will ease. In others, abandonment will create new risks: depopulated territories, failing infrastructure, unmanaged forests, weak borderlands, revived piracy and criminal enclaves. Russia may struggle to populate, let alone defend, its isolated territories. Parts of rural Europe and East Asia may become museums, wildernesses, retirement zones or strategic vulnerabilities. In some places humans may no longer be the practical apex predator. Pirate societies – not the Disney version – may become viable again, and indeed may buck the demographic trend by attracting young people who do not want to bear the economic and cultural burdens of an aged society or one dissolving under relentless cultural replacement. Nature may return, never gently.
Children will become the world’s scarcest and most valuable human resource. Markets will adjust. Politics will adjust. Services, education, health, robotics and AI will increasingly be shaped around the absence of young people and the needs of the old. Some wealthy societies will invest heavily in longevity and in attempts to defeat death. Others will invest in automation as a substitute for missing workers. These technologies will help. They will not solve the underlying problem, because societies are not only labour systems. They are chains of trust, care, meaning and replacement. And they are markets.
Besides, a robotic world will not necessarily be less complicated, dangerous or hard to govern than a human one. Some physical and technological spaces will become robotic monocultures. Sentience will spread in ways which almost by definition humans cannot follow or direct.
We will therefore go on to ask the practical question behind the demographic predicament: what could stop it? We call this “waiting for something” in a nod to the Dickensian hope that “something” will turn up. Because if nothing does, almost everything we worry about today – the environment, economic growth, AI, the human/machine negotiation, will be incidental at best. We will examine the candidates for ‘something’:. Pronatalist policy, by carrot (already tried) and stick (entering the chat), housing reform. Religion. Migration. Automation. Longevity. Artificial reproductive technology. Cultural reversal. Economic crisis. Environmental pressure. War. We will distinguish between what may slow decline, what may shift its regional pattern, and what might plausibly reverse it. We will also look hard at regional differences and the way these pressures will work themselves out in different parts of the world.
We will also examine why so many leaders misread the issue: because they live in crowded cities; because their own youth imprinted the certainties of a world of growth; because models push consequences beyond the political horizon; because old societies can still look busy; and because human beings are skilled at converting danger into reassurance when the alternative is fear.
Current policy seems to be based on those heuristic reflexes, as well as some optimistic/aspirational modelling of how to promote AMA (advanced maternal age) fertility. And that recurring hope for “something”. But hope is not analysis, and possibility is not probability. The first task is to see the structure clearly. Population decline is not another policy issue. It is the frame within which future policy issues will occur. It will hold the future more tightly than most governments, investors, companies or citizens yet understand.
That is where Perivista begins.
