What are essential and non-essential variables?

Question

Accepted Answer

Essential variables are crucial for the functioning of a system, while non-essential variables are not necessary but may provide additional information.

Essential variables are required for the system to operate correctly.
Non-essential variables are not necessary for the system's basic functionality.
Essential variables are typically directly related to the core purpose of the system.
Non-essential variables may provide supplementary data or enhance the system's performance.
For example, in a car engine, fuel and ignition timing are essential variables, while the color of the car is a non-essential variable.

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What are essential and non-essential variables?

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