The purpose of this book is to fulfil a gap in the market for technical publications. At present the market has two types of book those that try to tell you everything and others that try to tell you nothing. The first type of text is typified by a writer who is attempting to show the reader how clever they are by including a level of technical detail which can only be understood by technical people, such as the writer. The others try to dumb down the material to such a level that it provides nothing to anyone. This is not going to be a technical book. It will seek to avoid unnecessary jargon while explaining why enterprise risk management is more than just a clever idea; why in fact it makes sense for all firms. However, the book will stop short of telling you everything. That is for other books.