Chapter Objectives

  1. Understand the prerequisites of a design.

  2. Evaluate the need for the design.

  3. Take into account all the parameters related to the design.

  4. Conceptualise a good, feasible and economic design.

A need or problem encourages creative efforts to meet the need or solve the problem.


– Plato, Republic


Need is the prerequisite of the conceptualisation of any design. Need indicates an imperative requirement for the design. It can be of an individual, or a group of individuals, or of an entire society or a system. A design can be for an entirely new product, or, for a system. A design can also be conceived of to improve an existing product, or system. For example, an individual may need an ...

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