Phil claimed that genetic fitness mattered for ethics—which it probably does. For example, the Shakers believed that everyone should be celibate—and now there aren’t any of them around any more.
There would still be Shakers around if they had been able to keep up the practice of adopting children indefinitely. According to Wikipedia, that only stopped working when adoption became the province of the state. Wikipedia also says that there are still four Shakers today and people may join them if they like.
Phil claimed that genetic fitness mattered for ethics—which it probably does. For example, the Shakers believed that everyone should be celibate—and now there aren’t any of them around any more.
There would still be Shakers around if they had been able to keep up the practice of adopting children indefinitely. According to Wikipedia, that only stopped working when adoption became the province of the state. Wikipedia also says that there are still four Shakers today and people may join them if they like.