’The editor of this Handbook, Cristiano Antonelli, is to commended for the high quality of the group of authors he has assembled for this project. They provide excellent coverage of the various areas within the field, covering complexity of innovation, complexity of knowledge, complexity of structural change and development, and lessons and implications for economic policy. This is an important and evolving topic, and this book captures the cutting edge of research on it, particularly in connection with the broader idea of economic complexity.’