Your reasons reinforce the previous article. They simply add more detail and are part of the larger picture. If they were enough by themselves, the current displacement of sex roles would have happened when dairy farming was invented. :-)
>If they were enough by themselves, the current >displacement of sex roles would have happened when dairy >farming was invented. :-)
I will say to you like I said to the other poster, babies can't drink cow's milk. Not untill a year or so out. Not to mention the invention of bottles would be a factor, even if they could drink the goat's milk (an alternative to mother's milk) The invention of the bottle pushed things along, but even that wasn't readily available for cheap untill the later part of the 20th century. The invention of things able to allow the mother (including birth control!!!!) to be able to leave the children to work is what changed the roles. And that doesn't necessarily make them bad.