(i) The Span ofManagement has two implications:
1. Influences the complexities of the individual manager's job
2. Determine the shape or configuration of the Organization
(ii) The span of management is related to the horizontal levels of the organization structure, There is a wide and a narrow span  of management.
(iii) With the wider span, there will be lesshierarchical levels,and thus, the organizational structure would be flatter.
(iv) Whereas,with the narrow span, the hierarchical levels increases,hence the organizational structure would be tall.
 

Taylor propounded the principles of scientific management. They are:
(i) Science, Not Rule of Thumb
(ii) Harmony, Not Discord
(iii) Mental Revolution
(iv) Co-operation, Not individualism
(v) Development of each and every person to his or her greatest efficiency and prosperity.

Is Management a Science:
(i) Management is an in exact science, because in pure science, the principles are put into test in a laboratory and they are either proved or disproved exactly and precisely.
(ii) Similarly the management principles can be put to test in an organization where men, machine, money, and materials (4 Ms) are practically integrated towards achieving some chosen organizational goals.
(iii) These principles cannot be exactly proved or disproved either as they tend to be flexible to changing environment, policies and practical difficulties while synchronizing them together.
(iv) Everyone believes that management is an art. No, it is not an art in Toto. Because, the concept of art denotes the learning of skills and practicing them in day to day life.
(v) To conclude, Management is neither a science nor an art, but a combination of both requiring people holding managerial positions.

According to Koontz and Weihrich, "Management is the process of designing and maintaining of an environment in which individuals working together in groups efficiently accomplish selected aims.