Explain 'Science Not Rule of Thumb' as a principle of Scientific Management.
Science, Not Rule of Thumb:
In order to increase organisational efficiency, the ‘Rule of Thumb’ method should be substituted by the methods developed through scientific analysis of work. Rule of Thumb means decisions taken by manager as per their personal judgments. According to Taylor, even a small production activity like loading iron sheets into box cars can be scientifically planned. This will help in saving time as well as human energy. Decisions should be based on scientific enquiry with cause and effect relationships.