中心地的空间分布遵循基于经济原则的系统模式。
我记得我的朋友约翰尼·冯·诺伊曼曾经说过,“用四个参数我可以拟合一头大象,用五个我可以让它摆动它的鼻子。”
The real challenge is not just to feed the world, but to nourish it in a sustainable way.
The key to sustainable growth is to continuously improve and adapt to changing circumstances.