Similarly, our ability to cure childhood cancers, surgically extract inflamed appendixes, and deliver babies whose mothers have life-threatening pregnancy-specific conditions, all tend to stop selection by allowing more people to survive to a reproductive age.

在相同情况下，可以治疗儿童癌症、做阑尾炎手术、在孕妇有生命危险时成功接生，都阻止了自然选择，让更多人活下来，直到健康成长到生育年龄。