Those smooth, spit-cleaned cheeks gave no indication of the dreams crowding her skull. Should she make it to adulthood, the girl would arrive with two hundred and six bones. Two and a half million sweat glands. Ninety-six thousand kilometers of blood vessels. Forty-six chromosomes. Seven meters of small intestines. Six hundred and six discrete muscles. One hundred billion cerebral neurons. Two kidneys. A liver. A heart. A hundred trillion cells that died and were replaced, again and again. But no matter how many ways she dismembered and quantified the body lying beside her, she couldn’t say how many years the girl would wait before she married, if at all, or how many children she would have, if any; and between the creation of this body and its end lay the mystery the girl would spend her life solving.