New Delhi, May 18 -- Any mother will tell you the amount of "advice" they've received about pregnancy or child-rearing is mind-boggling. And extremely confusing, especially for new mothers. Expecting Better, economist Emily Oster's first book, was like a breath of fresh air for me. A mother herself, she wrote the book in simple terms, breaking down every pregnancy topic from nausea to epidurals into pure data and simply presenting it for moms to make an informed choice. She cites her research clearly, weighs the pros and cons of various options and puts it out there with no judgement. Some of her chapters even helped me stop second guessing choices I had made, things constantly dissected by aunties and nannies. The book is part of a serie...