Linear economy is understood to mean the path of a product, starting from the raw material, through production and one-time use, to final disposal. A large part of the raw materials used are either dumped or incinerated as waste after the respective useful life.
In a world of finite resources, sooner or later, the non-renewable raw materials used so far will be used up as raw materials for new products. In addition, linear economy also means increased primary energy consumption. As long as fossil fuels, which are responsible for high CO2 emissions and global temperature increase, are consumed, valuable raw materials are permanently lost.
Re-consumption as part of a circular economy is therefore the way to secure our livelihoods.