The authors note correctly that recent changes in drug development are resulting in a marked increase in the number of available compounds. These changes in drug development are affecting psychotropic medications as well, so that the clinician needs to become familiar with an ever-increasing number of drugs. This book is a response to that perceived need. It is multiauthored and follows a uniform format. The editors indicate that the chapters are organized by drug class and each follows a consistent sequence. Actually, the topics are organized by drug purpose rather than class, so that there are chapters on antipsychotics, antidepressants, etc. Although this is a useful strategy, it is somewhat limited. It presumes that patients fall neatly into categories such as depressed, anxious, or psychotic. The much more practical and real-world problem is that our patients do not follow these crisp classifications and insist on having symptoms from more than one category. The treatment of psychiatric patients increasingly requires dealing with fuzzy sets, whereas this volume deals with ideal sets.