Birthrates only matter because of mass immigration. If you don't have mass immigration they're irrelevant, especially with the pace at which automation via LLM (including in the material world with PaLM-E and other multimodal models for robotics) is advancing.
It doesn't really matter if South Korea's population falls from 50m to 10m provided two things are true:
Firstly, that total productivity can be maintained (this seems likely with LLMs able to take over a large percentage of white collar labor over the next few years, and robotics + multimodal LLMs likely to take over a large percentage of blue collar labor over the next decade or two). In this case, no economic collapse is likely, and while fiscal policy might need to adjust to redistribute generated wealth, that's not an existential issue.
Secondly, that those very same advances mean that military preparedness isn't damaged by falling number of young men, which again, advances in drone warfare suggest is likely. Plus, North Korea's birthrate is also collapsing (see Kim's recent comments) and it has half SK's population, so any disadvantage is unlikely to be large.
The main reason to be worried about birthrates is demographic competition as in Lebanon, in Israel, in India and so on. If a minority group has much higher birthrates than the native population, the long-term balance of power in a nation is almost guaranteed to shift.
The war in Ukraine is strong evidence that manpower will continue to matter in war.
There is a longterm dysgenic effect with 2 kids per household, because the way human fertility is designed to work is that ~8 births occur and perhaps 1 or 2 of the healthiest go on to have 8-12 births themselves. A norm of 2 births is a norm of decreasing health over generations until the problems become apocalyptic.
In America, even without mass immigration, you have the high fertility of the ultra Orthodox Jews. So unless you want a future without music or art or equality or indigenous Europeans it’s a good idea to incentivize births. Eg 200k in New York, doubling every 20 years means hundreds of millions within 200 years. And they already wield an absurd amount of political power in New York
In America, even without mass immigration, you have the high fertility of the ultra Orthodox Jews. So unless you want a future without music or art or equality or indigenous Europeans it’s a good idea to incentivize births. Eg 200k in New York, doubling every 20 years means hundreds of millions within 200 years. And they already wield an absurd amount of political power in New York
The number of Ultra Orthodox and the number of Amish in the US is actually pretty similar (~400k). Good tfr estimates for both are fraught (both populations are actually experiencing falling birthrates) but many estimates are similar. Of course, neither the Amish or the Ultra-Orthodox in their current forms will ever be the majority in the US because their cultures will undergo huge changes as they become large shares of the population (as they already are in Israel).
A much larger Amish population will necessarily experience urbanization and the cultural and economic change that will follow, and a much larger ultra orthodox population will become more splintered and atomized, and as more men labor (or spend any time) beyond the kollel the whole institutional structure of that society will begin to crumble in places. In both cases, birthrates will fall (as they already are).
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Notes -
Birthrates only matter because of mass immigration. If you don't have mass immigration they're irrelevant, especially with the pace at which automation via LLM (including in the material world with PaLM-E and other multimodal models for robotics) is advancing.
It doesn't really matter if South Korea's population falls from 50m to 10m provided two things are true:
Firstly, that total productivity can be maintained (this seems likely with LLMs able to take over a large percentage of white collar labor over the next few years, and robotics + multimodal LLMs likely to take over a large percentage of blue collar labor over the next decade or two). In this case, no economic collapse is likely, and while fiscal policy might need to adjust to redistribute generated wealth, that's not an existential issue.
Secondly, that those very same advances mean that military preparedness isn't damaged by falling number of young men, which again, advances in drone warfare suggest is likely. Plus, North Korea's birthrate is also collapsing (see Kim's recent comments) and it has half SK's population, so any disadvantage is unlikely to be large.
The main reason to be worried about birthrates is demographic competition as in Lebanon, in Israel, in India and so on. If a minority group has much higher birthrates than the native population, the long-term balance of power in a nation is almost guaranteed to shift.
The war in Ukraine is strong evidence that manpower will continue to matter in war.
There is a longterm dysgenic effect with 2 kids per household, because the way human fertility is designed to work is that ~8 births occur and perhaps 1 or 2 of the healthiest go on to have 8-12 births themselves. A norm of 2 births is a norm of decreasing health over generations until the problems become apocalyptic.
The number of Ultra Orthodox and the number of Amish in the US is actually pretty similar (~400k). Good tfr estimates for both are fraught (both populations are actually experiencing falling birthrates) but many estimates are similar. Of course, neither the Amish or the Ultra-Orthodox in their current forms will ever be the majority in the US because their cultures will undergo huge changes as they become large shares of the population (as they already are in Israel).
A much larger Amish population will necessarily experience urbanization and the cultural and economic change that will follow, and a much larger ultra orthodox population will become more splintered and atomized, and as more men labor (or spend any time) beyond the kollel the whole institutional structure of that society will begin to crumble in places. In both cases, birthrates will fall (as they already are).
Ultra Orthodox was actually ~700000 in 2020, per wikipedia.
They seem to be about one generation ahead of the Amish, both doubling a bit quicker than every 20 years.
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