Why do some people believe that the planning function is the most important one of a manager?

Many people believe that the planning function is the most important managerial role because it sets the foundation for all other management activities. Effective planning helps establish clear objectives, allocate resources efficiently, and anticipate potential challenges, which in turn guides decision-making and strategy formulation. By creating a roadmap for the organization, planning aligns team efforts and ensures that everyone works towards common goals. Without a solid plan, other functions like organizing, leading, and controlling can become ineffective or misaligned.