As a general rule, the larger the body of negroes on a plantation or estate, the more completely are they treated as mere property, and in accordance with a policy calculated to insure the largest pecuniary returns [profits]…. It may be true, that among the wealthier slave-owners there is oftener a humane disposition, a better judgment, and a greater ability to deal with their dependents indulgently and bountifully, but the effects of this disposition are chiefly felt, even on those plantations where the proprietor resides permanently, among the slaves employed about the house and stables, and perhaps a few old favourites in the quarters. It is more than balanced by the difficulty of acquiring a personal interest in the units of a large body of slaves, and an acquaintance with the individual characteristics of each. The treatment of the mass must be reduced to a system, the ruling idea of which will be, to enable one man to force into the same channel of labour the muscles of a large number of men of various and often conflicting wills.
The authors conclude that “if a disease has not been detected during the pregnancy, if something went wrong during the delivery, or if economical, social or psychological circumstances change such that taking care of the offspring becomes an unbearable burden on someone, then people should be given the chance of not being forced to do something they cannot afford.” And it isn’t clear where the line against infanticide would be drawn. “We do not put forward any claim about the moment at which after-birth abortion would no longer be permissible,” Giubilini and Minerva write. They doubt that “more than a few days would be necessary for doctors to detect any abnormality in the child.” But critics are already noting that many defects are discovered later .