Welcome to the "Complex Problem Solving with Causal Loop Diagrams" video lesson meant to illustrate the four steps in building a causal loop diagram. This video lesson is the fourth of five in the "Complex Problem Solving" video course, which explains how to critically evaluate and resolve messy organizational problems. In this lesson, viewers will learn the difference between positive causes and negative causes, as well as the difference between reinforcing loops and balancing loops. Learners will also review the difference between cause and correlation and consider the time element in causal relationships.