"The Most Important Thing in Business: A Lesson in Understanding the Consumer's Heart" Yanmi Mun / Tomoko Kitagawa Price: ¥1,620 #YanmiMun #TomokoKitagawa #Book #BOOK #Business #Economics The "differentiation trap" where professionals lose sight of the consumer's heart the more they rack their brains. We consider the dilemma that all business people face and explore solutions together. There are no particular stains on the cover or spine, but there are scratches and sun damage as shown in photos 3 and 4, so please only purchase if you understand this.