Vittorio Magnago Lampugnani, who edited the book The Architecture of the Window published in 1995, Michele De Lucchi, who participated in a research project on windows together with Lampugnani from 2005 to 2006, Taro Igarashi, who is the general supervisor of the 10-year-old Windowology program, and Tadahiro Yoshida, who is the Chairman and CEO of YKK AP Inc. and the founder of Windowology, will discuss the beginnings of YKK APʼs research on windows and look back on Windowology activities from the past decade.