> no one arguing for it will pretend for a second that the excess stops at stone age level. Thankfully it doesn't even go as far as 250 years ago, when our worl

> no one arguing for it will pretend for a second that the excess stops at stone age level. Thankfully it doesn't even go as far as 250 years ago, when our world was still entirely renewable. Look at the chart. Cement, Iron, and Steel are responsible 10.2% of global emissions. Without those, it's almost the definition of stone age. I'm not sure about "renewable", but the world was not zero emissions 250 years ago. There were just fewer people.