ABSTRACT
The purpose of this introduction is to provide an overview of the different chapters that make up this book. It can be considered as a kind of executive summary for readers who want to have a general idea of the content of the book, for readers who are not interested in all the chapters, or for readers who do not like the order of the chapters. It follows a chapter on terminology, in which the exact meaning of certain terms and expressions has been clearly defined, because it is the author’s experience that very often a lack of understanding is simply the result of the use of terms or expressions that have different meanings for different individuals in different countries. These choices do not pretend to be the perfect ones, because in matters of terminology the pros and cons of a definition can be discussed endlessly, but the precise sense of the terms used in this book must be accepted in order to have a comprehensive reading.
