Sometimes, the most profitable thing a restaurant can do is give customers a little time to want something they did not know they wanted.… Saturday afternoon in Yokohama, 2026. Thirty-two-year-old restaurant owner Daichi had recently begun studying an unexpected problem. His small Mediterranean restaurant was popular. Customers praised the food, the atmosphere, and especially the open kitchen where they could watch the chefs work. Yet despite a steady stream of diners, profits remained surprisingly thin. One evening, Daichi sat down with the restaurant’s sales data. He noticed something strange. Tables at which food arrived almost immediately tended to have lower average bills. Customers ate, paid, and left. But tables where the first dish took a little longer often generated additional orders: another appetizer, a second drink, perhaps a dessert. At first, Daichi thought the answer was simply that his kitchen needed to be slower. His chef disagreed. “Not...