That's the thing with exponentials, they are very hard to predict. We know that in general, exponential growth is unsustainable, and there has to be an inflection point, but where? It is usually difficult to know until the last moment, and even a small difference in time on where you predict the inflection point is can make a massive difference.
Look at COVID for instance, not the first novel coronavirus infection, it only took days to go from "maybe it is like the other ones that infected a few thousand people" to "everyone on the planet will get it", because the start of the curve looks the same.
The population hysteria from the 60s was proven wrong a long time ago but it's still pretty influential. E.g. it's not uncommon for millenials to talk about not wanting children because of overpopulation.
It takes a long, long time for new ideas to diffuse through society. Most people are not paying close attention to the cutting edge.
Even if there's a lot of scientific evidence, statistical proof etc. it's sort of surprising to me that when chatting with people all over the world (in dense cities and also in non-dense areas) how often I hear the sentiment that "there are too many people" and get the sense that they do mean that there's too many people in the world (not just within the surrounding 5-10km which might actually be true).
This might also be one of those things that aligns with people's experience of the world, and the de-population thing is inherently counterintuitive unless you are, by definition, outside the norm- that is, you would only ever notice this if you live where people already don't live. (rural Japan, etc.)
Millenials talk about not wanting children because they don't want to subject a new generation to this absolute shitshow of a planet, or because they can't afford the time and resources to adequately raise them.
I've not heard anyone talk about an overpopulation problem in 30 years.
I'm a millennial and I really really like this planet. It's my favorite one. My kids are going to like it here too someday, I hope.
My peers who are skipping kids are mostly doing so because their other ambitions don't align with raising a family, which I totally get. It's a huge trade off, I hope it'll be worth it.
> Millenials talk about not wanting children because they don't want to subject a new generation to this absolute shitshow of a planet
They often list overpopulation as a reason. But yes, it's not the only reason they give.
As an antidote to this kind of mindless negativity, just consider whether any individual human is happy to have been born. It seems very clear to me that most people enjoy being alive and so having children is moral on utilitarian grounds.
It was never proven wrong, as much as the world changed in a way that invalidated it.
The entire idea was that population growth was an exponential function, whereas agriculture output was a linear function. There would have been famine if nothing had changed, because there is only a certain amount of physical labor a person is capable of doing, which has to be divided between the farming, logistics, and cooking of the food.
What happened was that a century later we got mechanized farming and synthetic fertilizer, decoupling agricultural output from the population. Now a single person can do the work of thousands, and every year that number grows due to technology advances. It is too expensive to set up fully automated farms on the industrial scale, but it is technologically possible.
But none of that invalidates his idea. If you believe that an exponential function and linear function sharing a point at (0,0) must cross each other (subject to other reasonable conditions like not having crossed yet, the linear having a positive finite slope, etc), then it is not logical to reject Malthus. It just no longer applies because we decoupled our food production capacity from the population size.
I mean insofar as the idea is about contemplating those mechanisms in the abstract, sure. But insofar as they were predictive or an attempt at a descriptive characterization of where populations would actually go, clearly it didn't hold. And if it didn't hold because it's true on it's own terms in some abstract sense, so much the worse for its inability to model changes that would prove to be relevant to actual population dynamics.
It's also not just that we accommodated explosive populations but that eventually birth rates really did simply start slowing down for discernible reasons that future models were capable of integrating. Even if we continue to have technology that would give us the capacity to accommodate future increases in population, those increases are no longer happening.
Well I wouldn't both-sides this one. 2020s population forecasting is better than 1960s forecasting, the latter was repudiated and the former is correctly modeling basically everything. Demographic decline really is happening and has reasonably well understood mechanisms.
I suppose I would separate out some of the more extreme predictions about demographic collapse in Russia or China. I'm not sure what to make of those or if they're similarly credible to other kinds of population forecasts.
It takes an uncommon breadth of perspective and depth of intellectual humility to contradict evidence it is your job to collect and interpret.
Sometimes the trends of tomorrow just aren't in the data of today.
What modeler in the late 19th century, when children were still economic assets on farms and in factories, could have predicted they would become extraordinary economic liabilities?
I think a lot of the difference is due to different groups/lead figures/experts focusing on different concerns, e.g. people like Paul Ehrlich and environmental groups focused on ecological sustainability vs people like Elon Musk and governments focused on economic sustainability
Fear mongering / doomsaying has been a popular human tendency for as long as we have been able to record our interactions.
If you’re vague enough about it, you can never be wrong! And if you’re overly specific and have a modest following of rubes with more money than sense, you can take some of it! A lot of it!!
> It seems likely we lend too much credence to experts ability to model complex systems over a long period of time.
You say "complex systems" but are actually referring to human behavior.
Humans are unique in that they change their behavior in light of predictions. You can't make a prediction, and publicize that prediction, without changing the system.
From what I've heard, many people are declining to have children precisely because of the environmental effects of overpopulation. There are of course other factors, but that's one factor.
It’s more that we constantly extrapolate what experts are doing to the real world without taking in account the actual details. A research team comes up with a model that has some specific biases, parameters, etc. it yields some results. The result is then taken completely out of context and applied to a messy dynamic real world situation we don’t even have reliable metrics for. Then it just becomes a fight over narratives
It seems to me that with natural selection, women who still choose to have children today despite having an education, employment, and all of the other factors that seem to harm the birth rate, their children will likely have as many children as they did or more, even with the same gift of modernity their parents had, and this issue will stabilize or we’ll resume population growth in 50-100 years.
This scares me to be honest. We have an exponentially decaying graph if we compare resources on y v/s consumption on x. I don't know what the next 50 years are going to bring considering the total resources to use on Earth are an "infinite constant".
With a top heavy population pyramid, more resources have to be diverted to caring for the elderly, therefore less for raising the young - a self reinforcing mechanism.
When actually given the choice, many women are choosing not to have children, for good reasons. E.g. disruption of careers, physical effects on the body, being tied to a partner, financial drain.
Until we face up to both these issues, demographic collapse will continue - humanity will simply evaporate.
.. humanity will be replaced by the subset of it which continues to have children.
If a subgroup actually has children at above replacement, then as the other groups shrink, they will be a larger and larger fraction of the population.
The real "doomsday" is the fact that we no longer have the population growth to sustain the increases that markets demand while simultaneously not alienating the ever-loving hell out of the labor and customers that capital depend upon for those increases. It's already leading to socio-economic and political problems.
idk if I'm not naive enough or too naive but I fail to see how you can expect such a simplistic solution to just solve all the problems mentioned knowing the first, second, third, &co order effects
Politicians in the 70s were selling us the 3 days work week and retiring at 50 thanks to "automation", I fail to see how the "robots will solve all our problems" logic is any different.
The article assumes the original 1960 paper by von Foerster was a serious prediction. It wasn't. It was a joking example showing that fitting hyperbolic growth models do data leads to an absurd singularity, an infinite population in finite time. A much better write-up on it is Scott Alexander's "1960: The Year The Singularity Was Cancelled": https://slatestarcodex.com/2019/04/22/1960-the-year-the-sing...
Scott's conclusion (written in 2019, a year before GPT-3 was published) is perhaps more interesting today than it was then:
> In other words, the singularity got cancelled because we no longer have a surefire way to convert money into researchers. The old way was more money = more food = more population = more researchers. The new way is just more money = send more people to college, and screw all that.
> But AI potentially offers a way to convert money into researchers. Money = build more AIs = more research.
> If this were true, then once AI comes around – even if it isn’t much smarter than humans – then as long as the computational power you can invest into researching a given field increases with the amount of money you have, hyperbolic growth is back on. Faster growth rates means more money means more AIs researching new technology means even faster growth rates, and so on to infinity.
> Presumably you would eventually hit some other bottleneck, but things could get very strange before that happens.
Great link, thanks. In a pretty remarkable coincidence the post you linked, which itself is from seven years ago, considers a prediction from over 60 years ago of an anticipated doomsday, and that doomsday date just so happens to be a few weeks from today:
>In the 1950s, an Austrian scientist discovered a series of equations that he claimed could model history. They matched past data with startling accuracy. But when extended into the future, they predicted the world would end on November 13, 2026.
I’m as skeptical of underpopulation doomerism as I was about the previous overpopulation panic.
Both commit the fallacy of assuming present trends remain in place indefinitely and ignoring technology.
They also both tend to be racist. Overpopulation was always about too many of the “wrong” people while underpopulation is about not enough of the “right” people.
How is South Korea's very low birth rate about not having enough of the "right" people? Perhaps they could allow mass immigration to fix it but that would destroy the culture. The issue is happening everywhere, how is it racist?
> Perhaps they could allow mass immigration to fix it but that would destroy the culture. The issue is happening everywhere, how is it racist?
Well, there are people that think the idea of preserving cultures itself is racist (well, at least western ones), or that there is no detrimental effect to an existing culture by enabling mass migration.
I think the racist part is the pivot from demographic changes to the inference that they herald an extinction event for a particular culture, and especially tying that assumption to unwarranted extrapolations that misread the data, and especially when it's a fixation on populations that don't realistically face any such threat but nevertheless talking about the perceived threat in existential terms.
I'm not saying there's zero problems. Both too-rapid population growth and too-rapid population decline can cause problems with social stability and economic systems. I specifically called out doomerism.
South Korea's birth rate is indeed dangerously low and threatens their economy. If they cared they could do something about their extreme workaholism and cost of living.
As far as immigration destroying the culture: it depends on the rate. A healthy but limited rate of immigration revitalizes cultures, but it's pretty clear that sudden mass immigration is dangerous and causes a lot of problems and backlash.
Speaking of fixing problems... if our billionaire class who seem so worked up about birth rates wanted to do something about it they could also address the most frequently cited problems preventing young families from forming. Like housing prices.
If we really get into a situation where dangerously low birth rates are threatening the economy and social stability, the boring solution is to do what we do for other goods and services that the free market isn't adequately providing: directly subsidize it. Pay people to have kids. The easy way would be a payment or tax rebate to married couples with 0 children to have one child. But that's the boring solution that doesn't involve massive reactionary cultural transformations, so the right-wing "problemists" won't like it.
Edit: by problemism I mean people who use a problem as a lead-in to push only one solution, and they're not actually interested in solving the problem unless it's their solution. An example from the left side of the spectrum would be Marxists for whom any solution to climate change that doesn't destroy capitalism is unacceptable, or anarcho-primitivists or anti-tech trads for whom any solution that doesn't involve shutting everything down is unacceptable. In reality the solution to climate change is to emit less carbon, and physics doesn't care how we do that or what political system we are using.
There's a lot of right-wing problemists for whom any solution to excessive population decline that doesn't involve taking rights from women and re-introducing reactionary theocratic or nationalist structures isn't acceptable.
I don't think financial incentives will actually do that much, it's generally seen as something that works only marginally. People get more kids when they get stable/good jobs, have a support network, have a culture that incentivizes births.
South Korea is currently throwing money at the problem, upped parental leave even did some things to make it easier to retire if you got a lot of kids. I'm almost certain these things won't meaningfully change the situation (maybe go from 0.8 to 1.0) as all korean children are expected to get good jobs (white collar, certain professions) , they structure their society towards this and it's impossible to get a high birthrate like this.
I actually read about how something like presence of nuns in your town in italy was quite correlated with birthrates as it basically relieved all women but the nurses of some duties. In Korea you can see how the stability leads to a very significant effect on birthrates as Sejong is by far the highest birthrate region. Interesting since those really obsessed about birthrates also seem to hate the worker protections that make it difficult to fire people. I guess housing is another of those stability factors since renting really ups the risks of children.
Spent a few years doing population projections for regional planning and the thing that always got lost was how sensitive the long run numbers are to small fertility and migration assumptions.
Exponentials, let alone super-exponentials, will tend to do that. As the article notes, the biggest issue is assuming that the system you're modelling doesn't have any negative feedback loops that would stabilise it.
The same is true of investment and retirement calculations. Little differences in the estimation of an exponent will compound to huge differences in the long run.
I think we're already at a doomsday for population. The inertia of such a large world running on capitalism means we can't do anything about our problems any more, so I feel the bullet has been effectively fired. We're just watching it in slow motion.
I'm not sure what you mean by "capitalism", but the only reason the world's population is so large is that critical technologies like steel, cement, and nitrogen-based fertilizers have been deployed widely. Free markets and the profit motive have been critical drivers of this wide deployment. There are problems with these industries being so strongly profit-motivated, but it seems difficult to figure out what to do about those problems while maintaining current populations levels and material prosperity.
Capitalism means we can only take actions that benefit individuals in the short term (so, arms race). And the large population means inertia in that incorrect direction.
Seriously? China is one of the top polluters and it's a horrible country to live in. No one is solving climate change. The problem is worse than ever. None of the serious problems are being solved. Only made worse.
You're making the mistake of not looking down the road far enough. "China's developing rapidly and has all these cool EVs, looks like smooth sailing til the end of time for them!" Their male/female imbalance and TFR < 1 are absolutely massive looming issues. Maybe they'll advance to the "robots do everything and no one ever has to work" end-game and then those things won't really matter, but I wouldn't bet on it.
Yet it will somehow work out. Not ideally, thats just not humane way, in fact probably quite messily, but folks in few decades will look back on whats just another period of history. Some ups, some downs, some mild and some a bit extreme, and thats about it. Moving on, next batch of challenges ahead
It looks like both the climate and biodiversity will be a lot worse than now (with appropriate great migrations). Not sure what is able to compensate for that. Although indeed humans appear able to adjust to any kind of environment.
AI agent diversity will be on the upswing, so we've got that going for us. We'll also be more insulated from the climate by virtue of all of our bodies being lashed together into a machine and flesh lattice controlled by the executive overmind.
What remains of humanity will be safely cocooned inside the biomechanical membrane between the chaotic outside world and whatever environment the compute prefers. The perspiration of its leviathan breaths and a circulatory system that pumps coolant will ensure the temperature differential.
Like how single cell organisms were engulfed into multicellular organisms, so shall our descendants be engulfed. Countless immobile interconnected bio-systems with humanity as its ancestor. They'll less adaptive than us but more optimally specialized. I wonder how recognizable humanity would be when we're tessellated into one large interconnected amalgamation. Furthermore, I wonder how many generations we have left where we'll still need a face and outward looking eyes. Skin cells don't need flagella after all.
Although I think there's a good chance that this will happen there's no reason to assume that we'll be better or at most slightly worse in the future just because that's all we've experienced in (recent) human history, it's a sort of survivorship bias.
Things will stabilise somewhere. Not sure at what population level and what technological level. But I am sure at some point they start to rise again. It won't be downward trend to zero for forever.
I've got whiplash from the speed at which we've jumped from overpopulation doomsday to demographic degrowth doomsday.
It seems likely we lend too much credence to experts ability to model complex systems over a long period of time.
That's the thing with exponentials, they are very hard to predict. We know that in general, exponential growth is unsustainable, and there has to be an inflection point, but where? It is usually difficult to know until the last moment, and even a small difference in time on where you predict the inflection point is can make a massive difference.
Look at COVID for instance, not the first novel coronavirus infection, it only took days to go from "maybe it is like the other ones that infected a few thousand people" to "everyone on the planet will get it", because the start of the curve looks the same.
You got whiplash over the speed of...a few decades? Malthusian theory had been proven wrong and people have known this since last century.
The population hysteria from the 60s was proven wrong a long time ago but it's still pretty influential. E.g. it's not uncommon for millenials to talk about not wanting children because of overpopulation.
It takes a long, long time for new ideas to diffuse through society. Most people are not paying close attention to the cutting edge.
Even if there's a lot of scientific evidence, statistical proof etc. it's sort of surprising to me that when chatting with people all over the world (in dense cities and also in non-dense areas) how often I hear the sentiment that "there are too many people" and get the sense that they do mean that there's too many people in the world (not just within the surrounding 5-10km which might actually be true).
This might also be one of those things that aligns with people's experience of the world, and the de-population thing is inherently counterintuitive unless you are, by definition, outside the norm- that is, you would only ever notice this if you live where people already don't live. (rural Japan, etc.)
I think for most millenials it's an excuse not really the actual reason they don't want/get kids (although i think there's a few actual believers).
Millenials talk about not wanting children because they don't want to subject a new generation to this absolute shitshow of a planet, or because they can't afford the time and resources to adequately raise them.
I've not heard anyone talk about an overpopulation problem in 30 years.
I'm a millennial and I really really like this planet. It's my favorite one. My kids are going to like it here too someday, I hope.
My peers who are skipping kids are mostly doing so because their other ambitions don't align with raising a family, which I totally get. It's a huge trade off, I hope it'll be worth it.
> Millenials talk about not wanting children because they don't want to subject a new generation to this absolute shitshow of a planet
They often list overpopulation as a reason. But yes, it's not the only reason they give.
As an antidote to this kind of mindless negativity, just consider whether any individual human is happy to have been born. It seems very clear to me that most people enjoy being alive and so having children is moral on utilitarian grounds.
> Malthusian theory had been proven wrong
It was never proven wrong, as much as the world changed in a way that invalidated it.
The entire idea was that population growth was an exponential function, whereas agriculture output was a linear function. There would have been famine if nothing had changed, because there is only a certain amount of physical labor a person is capable of doing, which has to be divided between the farming, logistics, and cooking of the food.
What happened was that a century later we got mechanized farming and synthetic fertilizer, decoupling agricultural output from the population. Now a single person can do the work of thousands, and every year that number grows due to technology advances. It is too expensive to set up fully automated farms on the industrial scale, but it is technologically possible.
But none of that invalidates his idea. If you believe that an exponential function and linear function sharing a point at (0,0) must cross each other (subject to other reasonable conditions like not having crossed yet, the linear having a positive finite slope, etc), then it is not logical to reject Malthus. It just no longer applies because we decoupled our food production capacity from the population size.
I mean insofar as the idea is about contemplating those mechanisms in the abstract, sure. But insofar as they were predictive or an attempt at a descriptive characterization of where populations would actually go, clearly it didn't hold. And if it didn't hold because it's true on it's own terms in some abstract sense, so much the worse for its inability to model changes that would prove to be relevant to actual population dynamics.
It's also not just that we accommodated explosive populations but that eventually birth rates really did simply start slowing down for discernible reasons that future models were capable of integrating. Even if we continue to have technology that would give us the capacity to accommodate future increases in population, those increases are no longer happening.
Well I wouldn't both-sides this one. 2020s population forecasting is better than 1960s forecasting, the latter was repudiated and the former is correctly modeling basically everything. Demographic decline really is happening and has reasonably well understood mechanisms.
I suppose I would separate out some of the more extreme predictions about demographic collapse in Russia or China. I'm not sure what to make of those or if they're similarly credible to other kinds of population forecasts.
It takes an uncommon breadth of perspective and depth of intellectual humility to contradict evidence it is your job to collect and interpret.
Sometimes the trends of tomorrow just aren't in the data of today.
What modeler in the late 19th century, when children were still economic assets on farms and in factories, could have predicted they would become extraordinary economic liabilities?
I think a lot of the difference is due to different groups/lead figures/experts focusing on different concerns, e.g. people like Paul Ehrlich and environmental groups focused on ecological sustainability vs people like Elon Musk and governments focused on economic sustainability
yup. going by sustainability, we already have too many ppl on this planet. everything else is just "who pays my pension".
Fear mongering / doomsaying has been a popular human tendency for as long as we have been able to record our interactions.
If you’re vague enough about it, you can never be wrong! And if you’re overly specific and have a modest following of rubes with more money than sense, you can take some of it! A lot of it!!
Exactly!! During my childhood I used to be terrified if population explosion
Now that I have a kid, there is doom over population shrinkage
Sadly this will be used by propagandaists to doubt scientists
> It seems likely we lend too much credence to experts ability to model complex systems over a long period of time.
You say "complex systems" but are actually referring to human behavior.
Humans are unique in that they change their behavior in light of predictions. You can't make a prediction, and publicize that prediction, without changing the system.
From what I've heard, many people are declining to have children precisely because of the environmental effects of overpopulation. There are of course other factors, but that's one factor.
It’s more that we constantly extrapolate what experts are doing to the real world without taking in account the actual details. A research team comes up with a model that has some specific biases, parameters, etc. it yields some results. The result is then taken completely out of context and applied to a messy dynamic real world situation we don’t even have reliable metrics for. Then it just becomes a fight over narratives
It seems to me that with natural selection, women who still choose to have children today despite having an education, employment, and all of the other factors that seem to harm the birth rate, their children will likely have as many children as they did or more, even with the same gift of modernity their parents had, and this issue will stabilize or we’ll resume population growth in 50-100 years.
This scares me to be honest. We have an exponentially decaying graph if we compare resources on y v/s consumption on x. I don't know what the next 50 years are going to bring considering the total resources to use on Earth are an "infinite constant".
Sounds like we could use a psychohistory expert.
the planet will be devoid of people on Tuesday, 5 May 3108
Der letzte macht das Licht aus.
What light? You're in Germany, it's illegal to use electricity for environmental reasons since 2050.
With a top heavy population pyramid, more resources have to be diverted to caring for the elderly, therefore less for raising the young - a self reinforcing mechanism.
When actually given the choice, many women are choosing not to have children, for good reasons. E.g. disruption of careers, physical effects on the body, being tied to a partner, financial drain.
Until we face up to both these issues, demographic collapse will continue - humanity will simply evaporate.
According to some people, AI will take most of those jobs anyway, so maybe it all works out in the end :)
.. humanity will be replaced by the subset of it which continues to have children.
If a subgroup actually has children at above replacement, then as the other groups shrink, they will be a larger and larger fraction of the population.
The real "doomsday" is the fact that we no longer have the population growth to sustain the increases that markets demand while simultaneously not alienating the ever-loving hell out of the labor and customers that capital depend upon for those increases. It's already leading to socio-economic and political problems.
That's where robots come in. They replace the missing labor.
idk if I'm not naive enough or too naive but I fail to see how you can expect such a simplistic solution to just solve all the problems mentioned knowing the first, second, third, &co order effects
Politicians in the 70s were selling us the 3 days work week and retiring at 50 thanks to "automation", I fail to see how the "robots will solve all our problems" logic is any different.
"The great vice of the Greeks was not sodomy, but extrapolation"
Unrelated, but I do like to place my trust in internet strangers - is Ignition! a read you'd recommend?
The article assumes the original 1960 paper by von Foerster was a serious prediction. It wasn't. It was a joking example showing that fitting hyperbolic growth models do data leads to an absurd singularity, an infinite population in finite time. A much better write-up on it is Scott Alexander's "1960: The Year The Singularity Was Cancelled": https://slatestarcodex.com/2019/04/22/1960-the-year-the-sing...
Scott's conclusion (written in 2019, a year before GPT-3 was published) is perhaps more interesting today than it was then:
> In other words, the singularity got cancelled because we no longer have a surefire way to convert money into researchers. The old way was more money = more food = more population = more researchers. The new way is just more money = send more people to college, and screw all that.
> But AI potentially offers a way to convert money into researchers. Money = build more AIs = more research.
> If this were true, then once AI comes around – even if it isn’t much smarter than humans – then as long as the computational power you can invest into researching a given field increases with the amount of money you have, hyperbolic growth is back on. Faster growth rates means more money means more AIs researching new technology means even faster growth rates, and so on to infinity.
> Presumably you would eventually hit some other bottleneck, but things could get very strange before that happens.
Great link, thanks. In a pretty remarkable coincidence the post you linked, which itself is from seven years ago, considers a prediction from over 60 years ago of an anticipated doomsday, and that doomsday date just so happens to be a few weeks from today:
>In the 1950s, an Austrian scientist discovered a series of equations that he claimed could model history. They matched past data with startling accuracy. But when extended into the future, they predicted the world would end on November 13, 2026.
Set your calendars!
Oh no, 21.12.2012 all over again
I’m as skeptical of underpopulation doomerism as I was about the previous overpopulation panic.
Both commit the fallacy of assuming present trends remain in place indefinitely and ignoring technology.
They also both tend to be racist. Overpopulation was always about too many of the “wrong” people while underpopulation is about not enough of the “right” people.
How is South Korea's very low birth rate about not having enough of the "right" people? Perhaps they could allow mass immigration to fix it but that would destroy the culture. The issue is happening everywhere, how is it racist?
> Perhaps they could allow mass immigration to fix it but that would destroy the culture. The issue is happening everywhere, how is it racist?
Well, there are people that think the idea of preserving cultures itself is racist (well, at least western ones), or that there is no detrimental effect to an existing culture by enabling mass migration.
I think the racist part is the pivot from demographic changes to the inference that they herald an extinction event for a particular culture, and especially tying that assumption to unwarranted extrapolations that misread the data, and especially when it's a fixation on populations that don't realistically face any such threat but nevertheless talking about the perceived threat in existential terms.
I'm not saying there's zero problems. Both too-rapid population growth and too-rapid population decline can cause problems with social stability and economic systems. I specifically called out doomerism.
South Korea's birth rate is indeed dangerously low and threatens their economy. If they cared they could do something about their extreme workaholism and cost of living.
As far as immigration destroying the culture: it depends on the rate. A healthy but limited rate of immigration revitalizes cultures, but it's pretty clear that sudden mass immigration is dangerous and causes a lot of problems and backlash.
Speaking of fixing problems... if our billionaire class who seem so worked up about birth rates wanted to do something about it they could also address the most frequently cited problems preventing young families from forming. Like housing prices.
If we really get into a situation where dangerously low birth rates are threatening the economy and social stability, the boring solution is to do what we do for other goods and services that the free market isn't adequately providing: directly subsidize it. Pay people to have kids. The easy way would be a payment or tax rebate to married couples with 0 children to have one child. But that's the boring solution that doesn't involve massive reactionary cultural transformations, so the right-wing "problemists" won't like it.
Edit: by problemism I mean people who use a problem as a lead-in to push only one solution, and they're not actually interested in solving the problem unless it's their solution. An example from the left side of the spectrum would be Marxists for whom any solution to climate change that doesn't destroy capitalism is unacceptable, or anarcho-primitivists or anti-tech trads for whom any solution that doesn't involve shutting everything down is unacceptable. In reality the solution to climate change is to emit less carbon, and physics doesn't care how we do that or what political system we are using.
There's a lot of right-wing problemists for whom any solution to excessive population decline that doesn't involve taking rights from women and re-introducing reactionary theocratic or nationalist structures isn't acceptable.
I don't think financial incentives will actually do that much, it's generally seen as something that works only marginally. People get more kids when they get stable/good jobs, have a support network, have a culture that incentivizes births.
South Korea is currently throwing money at the problem, upped parental leave even did some things to make it easier to retire if you got a lot of kids. I'm almost certain these things won't meaningfully change the situation (maybe go from 0.8 to 1.0) as all korean children are expected to get good jobs (white collar, certain professions) , they structure their society towards this and it's impossible to get a high birthrate like this.
I actually read about how something like presence of nuns in your town in italy was quite correlated with birthrates as it basically relieved all women but the nurses of some duties. In Korea you can see how the stability leads to a very significant effect on birthrates as Sejong is by far the highest birthrate region. Interesting since those really obsessed about birthrates also seem to hate the worker protections that make it difficult to fire people. I guess housing is another of those stability factors since renting really ups the risks of children.
Relevant xkcd - https://xkcd.com/605/
Spent a few years doing population projections for regional planning and the thing that always got lost was how sensitive the long run numbers are to small fertility and migration assumptions.
Exponentials, let alone super-exponentials, will tend to do that. As the article notes, the biggest issue is assuming that the system you're modelling doesn't have any negative feedback loops that would stabilise it.
The same is true of investment and retirement calculations. Little differences in the estimation of an exponent will compound to huge differences in the long run.
I think we're already at a doomsday for population. The inertia of such a large world running on capitalism means we can't do anything about our problems any more, so I feel the bullet has been effectively fired. We're just watching it in slow motion.
I'm not sure what you mean by "capitalism", but the only reason the world's population is so large is that critical technologies like steel, cement, and nitrogen-based fertilizers have been deployed widely. Free markets and the profit motive have been critical drivers of this wide deployment. There are problems with these industries being so strongly profit-motivated, but it seems difficult to figure out what to do about those problems while maintaining current populations levels and material prosperity.
> it seems difficult to figure out what to do about those problems while maintaining current populations levels and material prosperity.
Pretty sure that's the point of the comment you're replying to.
Capitalism means we can only take actions that benefit individuals in the short term (so, arms race). And the large population means inertia in that incorrect direction.
This is a Western view not necessarily seen in Asia, such as China which does seem to be solving their problems just fine.
Seriously? China is one of the top polluters and it's a horrible country to live in. No one is solving climate change. The problem is worse than ever. None of the serious problems are being solved. Only made worse.
You're making the mistake of not looking down the road far enough. "China's developing rapidly and has all these cool EVs, looks like smooth sailing til the end of time for them!" Their male/female imbalance and TFR < 1 are absolutely massive looming issues. Maybe they'll advance to the "robots do everything and no one ever has to work" end-game and then those things won't really matter, but I wouldn't bet on it.
The robot thing was also what japan bet on in the 90s
Yet it will somehow work out. Not ideally, thats just not humane way, in fact probably quite messily, but folks in few decades will look back on whats just another period of history. Some ups, some downs, some mild and some a bit extreme, and thats about it. Moving on, next batch of challenges ahead
It looks like both the climate and biodiversity will be a lot worse than now (with appropriate great migrations). Not sure what is able to compensate for that. Although indeed humans appear able to adjust to any kind of environment.
AI agent diversity will be on the upswing, so we've got that going for us. We'll also be more insulated from the climate by virtue of all of our bodies being lashed together into a machine and flesh lattice controlled by the executive overmind.
What remains of humanity will be safely cocooned inside the biomechanical membrane between the chaotic outside world and whatever environment the compute prefers. The perspiration of its leviathan breaths and a circulatory system that pumps coolant will ensure the temperature differential.
Like how single cell organisms were engulfed into multicellular organisms, so shall our descendants be engulfed. Countless immobile interconnected bio-systems with humanity as its ancestor. They'll less adaptive than us but more optimally specialized. I wonder how recognizable humanity would be when we're tessellated into one large interconnected amalgamation. Furthermore, I wonder how many generations we have left where we'll still need a face and outward looking eyes. Skin cells don't need flagella after all.
Although I think there's a good chance that this will happen there's no reason to assume that we'll be better or at most slightly worse in the future just because that's all we've experienced in (recent) human history, it's a sort of survivorship bias.
Things will stabilise somewhere. Not sure at what population level and what technological level. But I am sure at some point they start to rise again. It won't be downward trend to zero for forever.
I do think so, but like you said, messily.
> folks in few decades will look back on whats just another period of history
I mean, of course. I also worry about French Revolution and WWII less then people who had to live it.