.. sectionauthor:: Yasuyuki SHIMIZU .. _epilogue: ################### Epilogue ################### Thank you for reading this textbook, "Hydraulics for Practitioners in the Reiwa Era". As of February 22, 2022, its original objectives have been completed: explanations on **2D flow and bed deformation calculations for meandering rivers**, involving basic formulas, difference schemes and calculation code. Since June 2021, when I started working on this textbook, it has taken me almost 3 years to reach this stage. It turned out to be a much more extensive project than I had originally planned. I am proud to say that there is no other book that describes the system in such detail. A review of the content will continue, and we will update the content accordingly. If you find any errors or improvements, please let me know. Postscript ################## Just as this book was nearing completion, I received the sad news of the passing of Professor Kazuyoshi Hasegawa. Much of the foundational knowledge in this book on alluvial river engineering was learned from Professor Hasegawa, and I also referenced many of his experiments to validate my computational models. I learned a great deal from Professor Hasegawa's dedication to his research and his guidance of younger researchers. I express my sincere gratitude and offer prayers for his eternal peace. April, 2024, in Sapporo Yasu SHIMIZU