Technology changes how many people a society needs to perform a task. It may also change which children can be conceived. These are powerful adaptations to low fertility, and they are often mistaken for a reversal. A robot can cover a shift. The next worker still has to be born.
Automation belongs first where labor is scarce and the work is repeatable. Japan has used industrial robots amid population aging; warehouses now move goods with fewer hands; software lets a small office process work that once occupied a floor. Artificial intelligence may extend the reach of doctors and engineers by handling routine parts of their work. If productivity rises faster than the worker-to-dependent ratio deteriorates, living standards can remain high for a long time.
That is a large gift. It gives an aging society room to honor promises without consuming every resource of the young. Better lifting equipment can keep a nurse healthy, while a monitoring system lets an older person remain safely at home. Technology should remove drudgery and multiply the attention only a person can give.
Care exposes the boundary. Bathing a frail parent involves physical tasks a machine may eventually perform well. It also involves judgment, trust, and the recognition that this particular person matters. A device can remind someone to take medicine. Responsibility still belongs somewhere. When no daughter, neighbor, nurse, or technician is present, the machine has not abolished dependence; it has concealed how thin the human backup has become.
The same is true across an economy. Automation can preserve output per person while total population contracts, even as towns empty and domestic markets shrink. Over one generation, machines can cover many missing tasks. Over ten, fewer people remain to direct the system and repair it. Over a thousand years, a civilization expanding among the stars needs more than efficient production on one aging planet. It needs descendants.
Medicine can recover a chance
Reproductive technology addresses the problem closer to its source. IVF already enables births after cancer treatment and years of unsuccessful attempts. Egg and embryo freezing preserve possibilities that illness or age might otherwise close. These births are not abstractions. Each is a child whose family might not have existed without medical skill.
The limits matter because policy can turn an extraordinary treatment into a general alibi for delay. IVF success falls with the age of the egg, treatment is physically and emotionally demanding, and many cycles do not produce a live birth. Public or insurance coverage can make treatment less dependent on wealth. It cannot make forty biologically equivalent to twenty-five.
Newer research reaches further. In-vitro gametogenesis aims to derive eggs or sperm from other cells. If it becomes safe, it could help people who cannot produce usable gametes and perhaps loosen some age limits. No human child has been born through the technique. The International Society for Stem Cell Research currently places reproductive use of human stem-cell-derived gametes in a prohibited category because safety and policy questions remain unresolved.
Artificial-womb research has sustained extremely premature lambs in a fluid environment, suggesting a future bridge for infants at the edge of viability. That is far from gestating a human being from implantation to birth. The distinction is moral as well as technical. Healing a failing pregnancy serves mother and child. Designing gestation to remove the mother from reproduction would change kinship, dependency, and the power of institutions over the beginning of life.
We should develop these tools under firm ethical limits. Medicine ought to heal infertility and premature birth. It should not manufacture embryos for disposal, select children as products, or persuade a generation that family formation can be deferred until a laboratory makes the schedule convenient. Technical power does not relieve us of deciding what the power is for.
Technology can make a smaller population more capable. It can help some couples become parents. It may give countries several decades in which decline feels less punishing. Those are reasons for investment, not reasons to abandon renewal. The machine is a servant of the family and civilization that made it. It is not their successor.
Citations
- Daron Acemoglu and Pascual Restrepo, “Demographics and Automation”, Review of Economic Studies 89, no. 1, 2022.
- Organisation for Economic Co-operation and Development, “Artificial intelligence and the changing demand for skills in the labour market”, 2024.
- Centers for Disease Control and Prevention, “National ART Summary”, 2024.
- American Society for Reproductive Medicine, “Mature oocyte cryopreservation”, 2021.
- International Society for Stem Cell Research, Guidelines for Stem Cell Research and Clinical Translation, 2025.
- Emily A. Partridge and others, “An extra-uterine system to physiologically support the extreme premature lamb”, Nature Communications 8, 2017.