an insight
“Healthy minds continuously integrate their differentiated parts. Mental-health issues all begin with impaired integration of the brain. Chaos theory observes that when a self-organizing system is not able to link differentiated parts, it moves to chaos or rigidity. The same happens with the mind—Siegel [Daniel Siegel, M.D., a clinical professor of psychiatry at the UCLA School of Medicine] notes that almost all mental disabilities can be categorized as chaos, rigidity, or both. Cities, too, are healthier when they link their differentiated parts.
Cities can also be overly rigid or chaotic, or find the right path in between. Rigidity often arises from centralized command and control, as in Soviet cities of the mid-twentieth century, and more recently in cities ruled by Islamic fundamentalism. In such cases, there is no place for individualism or self-expression; diversity, the source of generative capacity, is repressed. Rigid urban infrastructures are incapable of readily adapting to change.