Decision making is the primary task of the manager- Comment?

Decision making is part of life in everybody's day to day life. For managers, decision making is one of the primary tasks. Management comprises of the following tasks : POSDCORB - Planning, Organizing, Staffing, Directing, Co-ordinating, Reporting and Budgeting. Management is a dynamic process. In very process, the decision of a manager has the impact on the result. Managemnet is a social organ, the decision by the manager affects the society as a whole. A manager needs to take decision on so many circumstances like under certainity and uncertainity. Every decision he makes has the consequences on the development of the company.