A pregnant woman I didn't know struck up a conversation with me at a party recently. We chatted amicably about the weather (bad), the Golden Globes (fine) and the food at the party (great) before the conversation turned—inevitably, it felt—towards birth (hers). She told me she was nervous but excited, that she could not stop Googling, and how glad she was to be out of the infamously uncomfortable first trimester. "I know what you mean," I said. "When I was pregnant I was so tired I could barely move." Her eyes brightened. "You've got kids?" "No."