Let us for a moment think of an aspirin; you will immediately recall the mark in the middle. This mark is designed to help those who take a half dose. Every product that we see around us, even if not as simple as the aspirin, is of a certain design, from the vehicles we use to go to work, to TV remote controls.

Design, in brief, means a harmonious assembling of various parts in an orderly form designed for a common goal. Going by this definition, one has no difficulty in guessing that a car is a design. This is because there is a certain goal, which is to transport people and cargo. In realisation of this goal, various parts such as the engine, tires and body are planned and assembled in a factory.

However, what about living creatures? Can a bird and the mechanics of its flight be a design as well? Before giving an answer, let us repeat the evaluation we did in the example of the car. The goal, in this case, is to fly. For this purpose, hollow, light-weight bones and the strong breast muscles that move these bones are utilised together with feathers capable of suspension in the air. Wings are formed aerodynamically, and the metabolism is in tune with the bird's need for high levels of energy. It is obvious that the bird is a product of a certain design.