Okay, so newborns are effectively needy hot water bottles. But instead of looking at their helplessness at birth as a negative thing, we should consider the benefits.
So you’re an obstetrician in the early 20th century. You want to expand your practice to include all pregnancies and births, not just the high risk ones (but not those of black women, oh no!) So you gather up some sexist and racist drivel and viola! The Obstetrical Dilemma is born… and it’s killing women to this day.