The authors discuss this a bit. They note that even âhigher fertilityâ subcultures are trending down over time, so itâs not sufficiently clear that anyone is going to remain âabove replacementâ in the long run. That said, this does seem the weakest point for thinking it an outright extinction risk. (Though especially if the only sufficiently high-fertility subcultures are relatively illiberal and anti-scientific onesâAmish, etc. - the loss of all other cultures could still count as a significant loss of humanityâs long-term potential! I hope itâs OK to note this; I know the mods are wary that discussion in this vicinity can often get messy.)
The authors discuss this a bit. They note that even âhigher fertilityâ subcultures are trending down over time, so itâs not sufficiently clear that anyone is going to remain âabove replacementâ in the long run. That said, this does seem the weakest point for thinking it an outright extinction risk. (Though especially if the only sufficiently high-fertility subcultures are relatively illiberal and anti-scientific onesâAmish, etc. - the loss of all other cultures could still count as a significant loss of humanityâs long-term potential! I hope itâs OK to note this; I know the mods are wary that discussion in this vicinity can often get messy.)