I understand the desire to have power, but if children don't initially have a gender wouldn't it seem like the amount of children that chose to adopt the male method would be equally distributed in society with those that chose the female method. If both are ways of gaining power then it would just be due to some personal preference which method a child chooses. It seems like Ferguson contradicts herself on the role of biology. Biology in kids is moldable.
Biology plays a predictable, fixed role in most kids' development.