"The least obvious part of the system, its function or purpose, is often the most crucial determinant of the system's behavior."
— Donella H. Meadows
The Least Obvious Part Of The System Its Function Or Purpose Is Often The Most
The least obvious part of the system, its function or purpose, is often the most crucial determinant of the system's behavior.
From Thinking in Systems
Source
Thinking in Systems, Chapter 1