Oster, who is a contributing writer at The Atlantic, says she takes a “business-y approach” to other aspects of home life as well. After she and her husband arrive at a decision as parents, it’s not uncommon for one of them to send an email recap, something along the lines of “As per our earlier conversation, we have decided that the children will be enrolled in tennis camp over the summer. Please let me know if you want to follow up on this.”