There are methods for assessing novelty and for assessing circularity, but in the case of circularity they are focused on products that have already been developed. To implement in a proper manner these new functionalities in the products the concepts have to be evaluated. On the other hand, creativity plays an important role in introducing new features in products (as circularity is) in a new way.
In this way, among all stages that product design encompasses, most relevant and significant decisions are taken during the conceptual stage, when changes can more easily be introduced. Product engineering uses resources, both technical and material to create products. In this discipline, the decisions made influence the whole life cycle of the product, since the raw material obtaining to the end of life of the product. Product design is one of the most important factors to introduce the circular economy model.
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