Oznogrd wrote:You're acting like because texas is empty theres no overpopulation in any region of the world. Ever been to NYC, Chicago, or LA? Japan? Lots of places are overpopulated. Because theres empty space somewhere does not make it 1)livable or 2) evidence there isnt overpopulation in the world.
As much as I hate to say it, puttincomputers is somewhat right. 7 billion people in a city the size of Texas is a population density of 26,000 people per square mile. NYC has a density of 27,500. And everyone certainly couldn't live in ranch houses.
But the common thought experiment is not Texas, but the lower 48. Which gives you a population density of only 2400 per square mile. That's smaller than Des Moines. This scenario generally includes using the rest of the planet to supply this megacity so you'd still have smaller outposts which would lower density some and there'd be no reason not to include parts of Canada and Mexico in this megacity. It's a utopian's idea of course, but it's also a rhetorical display that GLOBAL overpopulation is not the issue some make it out to be.
Although if we had the capability to do any of this, putting the megacity in Aussieland would be the same as the lower 48 and probably a better idea.