Rahul, a worker, is given a target of assembling two computers per day. Due to his habit of doing things differently, an idea struck him which would not only reduce the assembling time of computers but would also reduce the cost of production of the computers. Rahul's supervisor, instead of appreciating him, ordered him to complete the work as per the methods and techniques decided earlier as nothing could be changed at that stage.
The given para describes one of the limitations of planning function of management. Name and explain that limitation.