It's Not Luck (1994) is a business novel and a sequel to The Goal. Set several years after, the plot continues to follow the advancement of the main character, Alex Rogo, through the corporate ranks of large manufacturer, UniCo. Author Dr. Eliyahu M. Goldratt, a business consultant known for his theory of constraints (TOC), continues to teach the reader his thinking processes through the eyes of Alex Rogo as he learns from his mentor, Jonah. In this book, the primary subjects are the resolution of conflict through the evaporating clouds method and the identification of root causes through the effect-cause-effect method. Source: Wikipedia (en)