 In order to lubricate the urban grow machine, it's essential that land is commodifiable, which means that it needs to be divided into relatively clear units, which are usually overlapped with private property rights. Actually the planning, this is one of the reasons why I'm interested in post-grow planning, is that planning is bounded historically, since 100 years, to the idea of zoning as a way to divide property. In fact zoning was invented in the beginning of the 20th century in the North America, in order to guarantee property rights.