"A book that literally puts data where it should be – central to systems and systems thinking. The authors have created a comprehensive and detailed volume on the issues of data in systems. Many aspects are covered: some traditional areas, others new and developing (e.g. data in autonomous flight). It is a very wide-ranging book which describes data issues in lots of different contexts, in some cases this only touches on the problems but it provides lots of pointers and prompts for further thinking, including the concept of ‘Scary Monsters’ (open questions). There are some excellent colour diagrams which show the relationships between the data and other aspects of the systems under consideration. These help to make a complex topic more understandable. It is an academic reference work which includes copious definitions, abbreviations and references and provides a broad entry point into the world of Data Safety." -- Mike Parsons