Synthesis is a prerequisite for the systems thinking, just as analysis was for the mechanistic thinking. It takes steps from whole to parts:
1. Identify the system of which the unit in focus is a part;
2. Explain the properties or behaviour of the system;
3. Finally, explain the properties or behaviour of the unit in focus as a part or function of the system.
Synthesis does not create detailed knowledge of a system’s structure. Instead it creates knowledge of its function. Therefore, synthesis must be considered as explaining (why, functions, understanding) while the scientific method must be considered as describing (what, how).