One of the discussions in the Social Sciences refers to how to explain the evolution and transformation of societies and organizations. What is the cause of transformation? One of the arguments has to do with the role of certain individuals who are called "leaders". This perspective places, in a few people, the capacity or strength to mobilize a society and produce its modifications. The story is usually told from characters or heroes whose actions triggered the new emerging dynamics. But is it so? What causes social transformation? The existence of leaders? What resistance forces emerge to prevent, frustrate or slow transformation? The lack of leaders? What to understand by 'leader'? What is the difference between 'leader' and 'leadership'? What role does system dynamics play in transformation? What is the leadership factor?