According to Scholtes, leaders and managers need to understand systems and focus their efforts on leading and managing what's happening in their organization's system. Data are the language of the system: the voice of the system, telling us how it is doing, what it is capable of, and what we can expect from it. It is data that show the variation and the causes of variation. Without systems, data, and a knowledge of variation we cannot lead, manage, or understand the chaos around us. Question 6 options: True False