Dorsey believes a clear description of users—their desires, emotions, the context with which they use the product—is paramount to building the right solution. In addition to Dorsey’s user narratives, tools like customer development,11 usability studies, and empathy maps12 are examples of methods for learning about potential users. One method is to try asking the question “Why?” as many times as it takes to get to an emotion. Usually, this will happen by the fifth why. This is a technique adapted from the Toyota Production System, described by Taiichi Ohno as the “5 Whys Method.”
