Pace layers
Pace Layers is the brilliant observation of Stewart Brand that different aspects of the world change at different speeds.
So, Fashion and art change and cycle faster than Commerce, which changes faster than Infrastructure, and in turn, Governance, Culture and finally, Nature.
The outer layers tend to innovate faster and so pull along the slower-changing layers. At the same time, the slower layers also stabilise the faster layers, reducing the chances of chaos.
At the boundaries, you get constructive turbulence, say, between self-driving cars and Governance or between legislation trying to keep up with the growth of electric scooters. Or how the growth in video streaming (Commerce) needs Internet Infrastructure to come along with it.
As a framework for thinking about big, complex things, I find it quite handy.
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