AI is just one piece of increased productivity. Even without AGI there are paths that could lead to 3x productivity faster than the population would go down by

AI is just one piece of increased productivity. Even without AGI there are paths that could lead to 3x productivity faster than the population would go down by 66%. There are other issues with an older age distribution which cannot be fixed by productivity though. There could be an oversupply of 5 bedroom homes for example.