most historical cultures made fairly little effort to support their conventions at all.
I am highly skeptical that this is true.
It looks like I misread you. I thought you were referring to moral conventions generally, while you seem to have been referring to moral conventions on infanticide. I agree that many historical cultures did not oppose infanticide as strongly as the current culture.
It looks like I misread you. I thought you were referring to moral conventions generally, while you seem to have been referring to moral conventions on infanticide. I agree that many historical cultures did not oppose infanticide as strongly as the current culture.