My friend and colleague Emily Oster's new book, Expecting Better, came out last week. She dives into the data behind what your doctors and friends tell you about pregnancy and gives you the information you need to ask the right questions and make decisions that fit with your values. I wrote a short blog post about it, including some thoughts as a parent and psychologist. In particular, why are people generally so optimistic about their health and other life outcomes, but can get so much more conservative when it comes to pregnancy. It's more questions than answers, so your thoughts are very welcome. You can read the article here: http://bigthink.com/random-assignment/expecting-better