The idea of calculating the amount of acreage per person doesn't really make sense to me due to our ability to construct buildings. Manhattan has less than 15,0

The idea of calculating the amount of acreage per person doesn't really make sense to me due to our ability to construct buildings. Manhattan has less than 15,000 acres but a whole lot more people than that live there. As another poster mentioned, it's about the trade-offs. Cities have a lot of advantages that, for most, make it the ideal place to live.