> the plantet can probably handle ten billion people living stone age lifestyles, It can't. And evidence of it is that the population only really grew once peo

> the plantet can probably handle ten billion people living stone age lifestyles, It can't. And evidence of it is that the population only really grew once people changed their lifestyles. But if you make extracting fossil fuel impossible, you will only have to be concerned about local pollution and ecosystem destruction. Those two will almost completely wipe out non-domestic life in a few years, but some parts of the world will probably survive until nearly all of those 10B people die.