“There can be no doubt that density has its advantages. In general, denser cities are more productive, more innovative, and more energy efficient. But only up to a point. The key function of a city is to enable exchange, interaction, and the combination and recombination of people and ideas. When buildings become so massive that street life disappears, they can damp down and limit just this sort of interaction, creating the same isolation that is more commonly associated with sprawl.”
Read the entire article at the Atlantic Cities: The Limits of Density.