I have some suspicion of anyone who puts forth "expertise" that is not backed with great experience. For example, there are parenting experts out there for any school of thought on how to raise a child. So many parents are so unsure that they are willing to blindly follow a self-promoting expert; some do so to great harm to their children. I believe that any parent knows more about his child than any expert and must trust his gut instincts about how to incorporate advice into the family dynamic. Clearly, there are ideas that work and we need to share them.
Ideas are wonderful toys to bat about and manipulate. I want to see concrete results before I buy the toy you package in bright colors. Today's New York Times carries a column by Nicholas D. Kristof called "Learning How to Think." I think it's worth five minutes of your day to read it.