Five years ago, singer Kumi Koda caused an uproar when she joked on a late-night radio show about how a woman's amniotic fluid (yōsui) becomes "spoiled" as she gets older. The subtext of the comment was the advantage of having babies at a younger age, but those quick to ridicule Koda's lack of gynecological expertise (including this column) fixated on what they saw as a swipe at women who put off having children due to careers and other exigencies of life.