This is the best book I have ever read on Fragile X, which my son and nephews have. It gives lots of personal stories but most of the writers, who are relatives of a person with X, seem professional in their own right, so the insight they offer is really excellent. Thank you to all of those diligent people who were able to express themselves so well and offer hope and truth to the rest of us. I am going to order two more copies; one to keep around the house and one for my son's workers and caregivers to read.