Of course, there are countless varieties of products, each with different raw materials and production processes. They aren't necessarily like paper or imitation leather, which both have currently available pollutant (raw material) recovery and reproduction technology that is also economically efficient. So there are now tens of thousands of researchers around the globe working on this very problem.
當然，現代產品何止億萬種，每種的原料不同、製造方式也不一樣，不見得都像造紙或合成皮業般，目前已有合乎經濟效益的汙染物（資源）回收及再生技術；而全球數以萬計的研究人員，也正在不眠不休地試著解決這個難題。