The notion of circularity has deep historical and philosophical origins. In general, circular economy favours activities that preserve value in the form of energy, labour, and materials. This means designing for durability, reuse, remanufacturing, and recycling to keep products, components, and materials circulating in the economy. More about the circular economy concept you can find here: https://www.youtube.com/watch?v=mvQEBB3IdZM