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What Is a System? - Definitions
The concept of a "system" is found in many contexts including reference books, school curricula, and scientific research.
Below are just two of many definitions of a system.

Definition 1:
“A system is an entity that maintains its existence and functions as a whole through the interaction of its parts.”
O’Connor & McDermott
For example, through the interaction among parts of the digestive system, the human body processes nutrients and byproducts.

 

 

Definition 2:
A system is a collection of elements that interact with each other over time to function as a whole.

A classroom full of students is a system.  Change the interaction of some of the elements in the system, for example how the seats are arranged, and the system will function differently over time. 

 

 

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