**Japanese and Filipino researchers developed computer simulations of human population growth, and say these suggest our survival as a species requires every woman of childbearing age on Earth to have an average of at least 2.7 kids – much higher than the 2.1 kids we previously thought would keep us going. The researchers say the previous rate of 2.1 kids per woman does not account for random differences in how many kids people have, as well as death rates, gender ratios and the fact that some people never have children. They say their research shows each woman needs to have at least 2.7 children to reliably avoid eventual extinction, especially in populations that are already small.**
Also from the study
The study found that, due to random fluctuations in birth numbers, a fertility rate of at least 2.7 children per woman is needed to reliably avoid eventual extinction – especially in small populations. However, a female-biased birth ratio, with more females than males born, reduces the extinction risk, helping more lineages survive over time. This insight may help explain a long-observed evolutionary phenomenon: under severe conditions – such as war, famine, or environmental disruption – more females tend to be born than males. It also suggests that, while extinction isn’t imminent in large developed populations, most family lineages will eventually fade out.
KidKilobyte on
We’ll go long extinct from other causes long before this matters. Life expectancy will probably rise dramatically soon as well, assuming AI gives us miracle medicines instead of killing us.
cdurgin on
Idiotic. Extinction is simply not on the table. The only concern with low birth rates is a loss of income sources for billionaires
jcrestor on
This is stupid talk.
We could halve the world population every 20 years, and there would still be 250 million in a hundred years.
Humanity will not die out because of low fertility.
Instead of fueling panic, maybe try to better quality of life for ordinary people so that they feel positive about procreation?
But nope, we need dat cheap factory labor meat.
ac9116 on
I am eager to see in about 100 years when technology has made accessing needs like food easier and populations have plummeted so real estate is cheaper and more accessible, if birth rates will go back up. I doubt they stay low forever and it’s a product of a unique choke point of resource scarcity in our time.
And that’s not to say we had to have housing scarcity, that was a macroeconomic choice we made in western societies.
Pilot0350 on
Please don’t. We’ve had a good run (jk it was terrible) now let us make way for something better. Sentient raccoons or something idk just not us.
Gilles_of_Augustine on
Dog whistle for pronatalism, which is itself a dog whistle for treating women as chattel.
If you’re worried about birthrate, then give people affordable medical care, guaranteed maternity/paternity leave, affordable childcare, and quality education.
California55551 on
Awesome, send over Sydney Sweeney and I’ll get to work saving humankind
kayl_breinhar on
I hate these “Eugenics in plain sight” articles. They always boil down to “**the right people** need to start reproducing because *the wrong people* are going to outpace them/us.”
It’s a Japanese study, and if ever there was a society that 1) wants to hypercharge their birth rate, and 2) ensure that their “gene pool” isn’t sullied…
OldWoodFrame on
Global population is 1600% higher than it was in the 1400s and *still increasing.*
Extinction risk exists, but other factors dominate the odds. We are *way* closer to building an un-aligned AI that unleashes a bio weapon to kill all humans. We are *way* closer to a climate change tipping point collapsing global food stock.
ActualModerateHusker on
Musk wants us to believe we can colonize mars!
you know it’s almost certainly a lot easier to just fix this planet and get life expectancies into the triple digits than it is to colonize a lifeless planet
Prodigle on
I think people are quick to jump on the capitalism angle of this, but basically every modern system of welfare is threatened by depopulation as well
Disastrous-Form-3613 on
AFAIK impregnating women against their will is illegal /thread
13 Comments
From the article
**Japanese and Filipino researchers developed computer simulations of human population growth, and say these suggest our survival as a species requires every woman of childbearing age on Earth to have an average of at least 2.7 kids – much higher than the 2.1 kids we previously thought would keep us going. The researchers say the previous rate of 2.1 kids per woman does not account for random differences in how many kids people have, as well as death rates, gender ratios and the fact that some people never have children. They say their research shows each woman needs to have at least 2.7 children to reliably avoid eventual extinction, especially in populations that are already small.**
Also from the study
The study found that, due to random fluctuations in birth numbers, a fertility rate of at least 2.7 children per woman is needed to reliably avoid eventual extinction – especially in small populations. However, a female-biased birth ratio, with more females than males born, reduces the extinction risk, helping more lineages survive over time. This insight may help explain a long-observed evolutionary phenomenon: under severe conditions – such as war, famine, or environmental disruption – more females tend to be born than males. It also suggests that, while extinction isn’t imminent in large developed populations, most family lineages will eventually fade out.
We’ll go long extinct from other causes long before this matters. Life expectancy will probably rise dramatically soon as well, assuming AI gives us miracle medicines instead of killing us.
Idiotic. Extinction is simply not on the table. The only concern with low birth rates is a loss of income sources for billionaires
This is stupid talk.
We could halve the world population every 20 years, and there would still be 250 million in a hundred years.
Humanity will not die out because of low fertility.
Instead of fueling panic, maybe try to better quality of life for ordinary people so that they feel positive about procreation?
But nope, we need dat cheap factory labor meat.
I am eager to see in about 100 years when technology has made accessing needs like food easier and populations have plummeted so real estate is cheaper and more accessible, if birth rates will go back up. I doubt they stay low forever and it’s a product of a unique choke point of resource scarcity in our time.
And that’s not to say we had to have housing scarcity, that was a macroeconomic choice we made in western societies.
Please don’t. We’ve had a good run (jk it was terrible) now let us make way for something better. Sentient raccoons or something idk just not us.
Dog whistle for pronatalism, which is itself a dog whistle for treating women as chattel.
If you’re worried about birthrate, then give people affordable medical care, guaranteed maternity/paternity leave, affordable childcare, and quality education.
Awesome, send over Sydney Sweeney and I’ll get to work saving humankind
I hate these “Eugenics in plain sight” articles. They always boil down to “**the right people** need to start reproducing because *the wrong people* are going to outpace them/us.”
It’s a Japanese study, and if ever there was a society that 1) wants to hypercharge their birth rate, and 2) ensure that their “gene pool” isn’t sullied…
Global population is 1600% higher than it was in the 1400s and *still increasing.*
Extinction risk exists, but other factors dominate the odds. We are *way* closer to building an un-aligned AI that unleashes a bio weapon to kill all humans. We are *way* closer to a climate change tipping point collapsing global food stock.
Musk wants us to believe we can colonize mars!
you know it’s almost certainly a lot easier to just fix this planet and get life expectancies into the triple digits than it is to colonize a lifeless planet
I think people are quick to jump on the capitalism angle of this, but basically every modern system of welfare is threatened by depopulation as well
AFAIK impregnating women against their will is illegal /thread