It's the ecological footprint of each person that's a concern. You can feed 10 billion people, but people don't want to just not starve. We already overshoot th

It's the ecological footprint of each person that's a concern. You can feed 10 billion people, but people don't want to just not starve. We already overshoot the resources Earth can regenerate in a given year in July, and that regeneration capacity and our ability to organize will fall apart faster and faster. Imagine if the rest of the Earth's population would be allowed to live like people in the United States.