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.” Ohno wrote that it was “the basis of Toyota’s scientific approach … by repeating ‘why?’ five times, the nature of the problem as well as its solution becomes clear.”
