Chapter 3
Coupling and Complexity: Interactions
Complexity rises, not from parts’ number or size,
It’s interactions among them, where troubles can rise.
While linear ones are simple and clear,
With complex interactions, failures loom near.
The preceding chapter sought to define what complexity is. It started by defining complexity as the cognitive load one experiences when working with a system, and elaborated using the Cynefin framework. You learned that in complex situations, the outcome of an action can only be identified in retrospect. It is not immediately apparent, and you cannot consult an expert; instead, you must conduct an experiment and observe the resultant behavior. Because such uncertainty is not a desirable property for a software ...
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