acknowledgements
Jungjun Hur: This book would not have been possible without the constant support and encouragement of my family. I would also like to thank Younghee Song for the collaboration, feedback, and support throughout this journey.
Younghee Song: First, I want to thank my family. To my constant source of support—my father, Baek-young Song; my mother, Sun-ee Youn (my forever best friend!); and my brother, Young-han Song—I could not have given myself fully to this work without you. I hope to make you proud as a daughter and a sister.
To my coauthor, Jung-jun Hur: your brilliant insight, persistence, and talent continue to inspire me. I count myself lucky to have written this book with you.
I am also grateful to Yong-min Cho, Dae-il Yang, and Sung-won Shin at PwC for their trust, support, and encouragement.
We are grateful to the team at Manning for making this book real. Vaibhav Tupe’s technical review caught issues that would have embarrassed us in print, and Rebecca Johnson’s editorial care turned a sprawling draft into something readers can use. We thank Michael Stephens, who believed in this project from the beginning and gave it a home at Manning. Also, we thank the members of the production team who made the book possible.