Design by Evolution-

One characteristic feature of this process of design by evolution was that the designers worked largely by themselves, and communicated their ideas to others only through their work. Pieces of design onformation were stored in memory, learnt and passed down during the long periods of apprenticeshop of the master craftsmen. The overall shape of the product and the process of achiving it were passed on to the future generations of artisans, but the reasons for the same were lost in the absence of any tradition of codifying the design features.

What is designing?

To design is to innovate and to create. The inventions of the wheel, the plough, the hurricane lantern the steam engine. The electric generator and the motor, the wireless and the computing machine are all designs of greater or lesser significance. However, an engineer is not the only person who designs. Almost all human activity seems to be revolving around design. It is an activity directed towards a need; it is creative; and it is concerned with the best use of resources.
Design is a process concerned with generating ideas and suggesting ways to turn these ideas into reality to satisfy some needs optimally under the trelevent constraints.