The notion of how fast and slow design processes relate, influence, cohere and disrupt one another first captured my imagination in reading The Clock of the Long Now, a book by Stewart Brand about the project of the same name (now part of the Long Now Foundation). There is one particular passage that stood out, and has since been frequently referenced by Gail and me in our process design work:
In civilizations with long nows, says Brian Eno, "you feel a very strong but flexible structure . . . built to absorb shocks and in fact incorporate them." Once can imagine how such a process evolves: All civilizations suffer shocks, yet only those that absorb the shocks survive. This still does not explain the mechanism however. In recent years a few scientists (such as R.V. O'Neill and C.S. Holling) have been probing a similar issue in ecological systems: How do they manage change, and how do they absorb and incorporate shocks? The answer appears to lie in the relationship between components in a system that have different change rates and different scales of size. Instead of breaking under stress like something brittle these systems yield as if they were malleable. Some parts respond quickly to the shock, allowing slower parts to ignore the shock and maintain their steady duties of system continuity. The combination of fast and slow components makes the system resilient, along with the way the differently paced parts affect each other. Fast learns, slow remembers. Fast proposes, slow disposes. Fast is discontinuous, slow is continuous. Fast and small instructs slow and big by accrued innovation and occasional revolution. Slow and big controls small and fast by consrtraint and constancy. Fast gets all our attention, slow has all the power. All durable dynamic systems have this sort of structure; it is what makes them adaptable and robust.