"Over the next 50 years we will spend trillions of dollars on city building. The question is: How should we build? For many economists, urbanists and developers, the answer is simple: We should build up. But the answer is more complex than that."
"Researchers at the Santa Fe Institute have been able to demonstrate that bigger, denser cities literally speed up the metabolism of daily life. Larger beasts may have slower metabolisms in the animal kingdom, but the opposite occurs in cities, which get faster as they grow. Doubling a city's population, the Santa Fe researchers found, more than doubles its creative and economic output, a phenomenon known as "superlinear scaling."
Interesting Essay by Richard Florida