Advantages It makes a good interesting read, as long as you are not going to be upset if it does not work for you. It is fun to try.
Disadvantages There are no guarantees it will work, but the book does stress this
Firstly I would like to say that I know some people will totally disagree with this type of book and think that you should let nature take its own course. I have 3 of the most beautiful boys ever and I love them so much it hurts. We have always wanted 4 or 5 children and don't mind what sex they are as long as they are healthy and happy. Then I saw this book in a shop and it grabbed my atttention. I had a quick look and it made interesting reading so I bought it. It tells you from the very start that there is no guarantee that if you want a certain sex child and follow what the book says that ...