for a stimulating and productive three-year collaboration. They are all authors of chapters in this book. We are grateful to all of the authors who have contributed to this collection, for their excellent contributions, their receptiveness to feedback and their patience during the long process of bringing the book to fruition. We are extremely grateful to the University of Agder for hosting the INDVIL project and for the administrative support provided to us. In June 2018 we held a seminar with many of the book's authors at the Metochi Study Centre on the island of Lesbos. We thank the staff at Metochi for the wonderful service they provided and the fantastic atmosphere which enabled us to work hard together on the book. We thank reviewers for taking the time to read our many chapters with care and for providing helpful feedback. We are grateful also to Alberto Cairo for his extremely generous foreword, and to esteemed data visualization scholars for endorsing this volume on its cover. We want to express our enormous gratitude to all of the brilliant data visualizers whose work inspires our own, especially Andy Kirk, for ongoing support and openness to dialogue. We could not have made it through the final stages of producing this book without the invaluable help of Robin Steedman, whose work as an editorial assistant has been faultless. Thank you Robin. We also thank Prisca Schmarsow of Eyedea Studio (https://eyedeastudio.london/) for lovely cover design and the staff at the Amsterdam University Press for their assistance along the way. Finally, Helen would like to thank Martin, and Martin would like to thank Helen, for the enjoyable and rewarding experience of editing this book together.