The circular economy is based on what we see in nature, which means that there is no waste in nature, everything can (and should) be recycled. This is nothing new, as we have been writing on recycled paper for at least thirty years. But the recycling and reprocessing of metals in blast furnaces also goes back many decades. The most novel thing is that they are already trying to teach the next generation this way of thinking at school. There is no rubbish, it's just not the particular material where someone or something sees value in it. For example: a hundredweight of cinnamon in the woodyard is only in the way, but in the power station it is converted into energy, in the garden it protects the soil from drying out, and in time it becomes a nutrient for a plant.