I have no idea if it's correct that high growth rates reduce fertility, but it is an interesting idea and not a totally unreasonable one. It's something like a temporal comparative advantage.
The suggestion is that during periods of high economic growth potential it might be more important for people to work on improving the world and then when there's less growth potential we focus on increasing the number of people to enjoy those higher material standards.
I have no idea if it's correct that high growth rates reduce fertility, but it is an interesting idea and not a totally unreasonable one. It's something like a temporal comparative advantage.
The suggestion is that during periods of high economic growth potential it might be more important for people to work on improving the world and then when there's less growth potential we focus on increasing the number of people to enjoy those higher material standards.