dr. hyman is absolutely right. if somebody were to open up the book and just read the words and just apply them without using any clinical judgment, that could be very, very harmful. that's completely at odds with the way the book is supposed to be used. it says so in front of the book in plain language. this is not a cook book. this must be used with clinical judgment. >> woodruff: what about the use that insurance companies and others make? educational institutions make of this? and how doctors use it? >> well, i often say that doctors use the book but just in the way that dr. first said, with clinical judgment. people who are insurance claims adjustors and educators and people in courts of law are not trained as clinicians and tend to read the book quite literally. i think it's important that with the revision there be appropriate educational efforts again to make sure that nobody who really is in need of services is denied services or the book is taken to be too literal. i think given our current state of knowl