At least, the timing of the redefinition of “woman” is convenient. At the exact moment that we are implicitly evaluating the results of a century’s worth of upheaval on sexual roles, the key demographic in question has become almost impossible to describe. Still, I never found the “transgender question,” as Todd calls it, particularly interesting. It seemed like a red herring on the quest to understand women. But I came back to it, because there is something, certainly, going on wit...