Originally Posted by
atomic sagebrush
They have more luck than the rest of us. :)
YOu guys have to understand that Mary and Martha are not really TYPES of people, they are STRATEGIES that anyone can use (and we all use both Mary and Martha types of things all the time). So it is normal for people to be more Mary, or more Martha during different points of their life and that coupled iwth condition, fertility, their husband's contribution, and luck, makes it ENTIRELY possible for people to get different genders.
Most people get different genders of kids at some point without even trying. It feels like this impossible thing from where we sit but really, it cannot be that hard (or even hard at all) since most manage it with no effort at all.