The vast majority of research articles and essays in this book deal with one or more aspects of what has been called the art and science of modern hotel management. It should be noted that the word modern can be loaded with the potential of much misunder- standing. Hotels are changing and will continue to change. As a result, the techniques of management of modern hotels must adapt to changing circumstances. Subsequent sections of this book are designed to help the student and practitioner discover information, meth- ods, and techniques for dealing with these changing circumstances.