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Continued population growth may be desirable in the short run, but in the long run is very much a problem. Humans are not that good at long term planning.

The reason it is a problem is with the younger generations being smaller, and having fewer children, you get fewer workers to support the larger retired generations. Those people still need food, housing, consumption goods, etc. And someone needs to make it, grow it, provide it, etc. Let alone the fiscal implications of pensions and things like social security.

Peter also mentions that when demographics get bad enough societies simply collapse. He does not to into detail on why the collapse, rather than just get smaller and then stabilize. For example, he said some countries are already past the point of no return, population-wise.

My hope is that automation will save some countries. Automation in food production (we are already on our way there), in goods production (ditto), etc.

FWIW, he goes into various reasons why some countries or regions will fare better than others over the next few decades. For many of us here, the USA is on a list of "will fare better than most". Which does not mean "cakewalk for us".

Interesting tidbit from the book: I had no idea how important the US Navy has been to allowing this new world order that was brought in by Bretton Woods at the end of WWII. And how our collective desire to stop being the world's police force is accelerating this coming change.
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