There are sects in rich countries with fertility many times replacement. They're easy to overlook because they started tiny and it's only a few generations afte

There are sects in rich countries with fertility many times replacement. They're easy to overlook because they started tiny and it's only a few generations after the demographic transition. Lower birthrates in the general population only shorten the time to the new growth mode. The Culture is not limited to biological rates of reproduction. That nobody ever sets off a human forkbomb is a collective choice, somehow. (Sketchy reply because I'm on a tablet.)