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Designing

People who produce designs are called designers. The term 'designer' usually refers to someone who works professionally in one of the various design areas. Within the professions, the word 'designer' is generally qualified by the area of practice (for example: a fashion designer, a product designer, a web designer, or an interior designer), but it can also designate others such as architects and engineers (see below: Types of designing). A designer's sequence of activities to produce a design is called a design process, with some employing designated processes such as design thinking and design methods. The process of creating a design can be brief (a quick sketch) or lengthy and complicated, involving considerable research, negotiation, reflection, modeling, interactive adjustment, and re-design.

Designing is also a widespread activity outside of the professions of those formally recognized as designers. In his influential book The Sciences of the Artificial the interdisciplinary scientist Herbert A. Simon proposed that "Everyone designs who devises courses of action aimed at changing existing situations into preferred ones". According to the design researcher Nigel Cross, "Everyone can – and does – design" and "Design ability is something that everyone has, to some extent, because it is embedded in our brains as a natural cognitive function".