This is consistent with According to Mutlu and Er (2003) which combined ‘design’ and ‘innovation’ or ‘design innovation’ to discuss a term not universally agreed upon. The term however is increasingly being used in both academic and professional design discourses. Although the modern theory of innovation in economics has begun to refer to the practical relationship between design and innovation, and to emphasize the role of design in innovation process, it still appears to be inadequate in explaining this new conceptual and terminological expansion —the design innovation. The authors however stated that there is a close relationship between design and innovation with design being at the core function of innovation, and innovation being the main driving force in an economy.