[Machine Translation] One way to behave and things will start to fall into place. Cost-effectiveness and time-effectiveness have been prioritized over cost-effectiveness and time-efficiency, and human relationships have become less and less important. Please go ahead" and "After you, please excuse me". The author, who was born into a family of tea ceremony masters, including Sen no Rikyu, teaches us the habits of behavior that we should return to when we are troubled by human relationships.