And if we're really going to bring reality into this, then we'll need to consider the ages of the children, because of the at-birth sex ratio (105 newborn boys

And if we're really going to bring reality into this, then we'll need to consider the ages of the children, because of the at-birth sex ratio (105 newborn boys for every 100 newborn girls[0]) and differing mortality rates for each sex. [0]http://en.wikipedia.org/wiki/Human_sex_ratio http://en.wikipedia.org/wiki/Human_sex_ratio