As a user of the fuzzy logic program that von Altrock's company makes, I have found that this book is absolutely necessary. The truly weird thing is that Inform, the software publisher, doesn't tell you about this book, when it should be included with every Fuzzy program that they sell. The manual that is included with the program is wretchedly bad; dull, confusing, and pointless. Only worse. Once you discover this book, much of the operational confusion surrounding Fuzzytech will be cleared up. However, von Altrock cannot resist a certain measure of obscurity. NeuroFuzzy applications is direct and clear, but leaves plenty of understanding gaps between one implementation and another. Von Altrock needs to expand this text and provide a wider range of specifics and details. For instance, until very recently, Fuzzytech suffered from a limited ability to read data files. This placed the program far behind the curve of contemporary usage. This is badly needed information; how does the progam really work ? Since this is the ONLY readable volume on the subject, von Altrock and Inform would be well advised to do a more thorough job of linking theory to practice.