1."Coordination is the essence of management" i.e. Coordination affects all the functions of management, viz., Planning, Organizing, Staffing, etc. 2.Coordination is a function of management. 3.Coordination is a principle of management, and all other principles are included in this one principle, i.e. Co-ordination is the "Mother Principle". 4.According to Mary Parker Follett, Coordination is the "Plus-value of the group". That is, if there is good Co-ordination then the combined group achievement will be greater than the total of the individual achievement, i.e. 2+2=5. This is impossible in the physical world, but it is possible in human affairs through co-ordination.