True but not in these timeframes. With all respect, willing to take the (way way) over in the scenario parent describes- total global population of 1-2B in 50 y

True but not in these timeframes. With all respect, willing to take the (way way) over in the scenario parent describes- total global population of 1-2B in 50 years. In 200 years? Yeah, dramatically reduced counts of humans is possible. But in 50 years- global population will be greater than it is now.