Feedback

Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause and effect that forms a circuit or loop. The system can then be said to feed back into itself. The notion of cause-and-effect has to be handled carefully when applied to feedback systems:

Simple causal reasoning about a feedback system is difficult because the first system influences the second and second system influences the first, leading to a circular argument.

Extends: Feedback, [Control theory](https://wikipedia.org.ai/Control theory), [Electronic feedback](https://wikipedia.org.ai/Electronic feedback), [Complex systems theory](https://wikipedia.org.ai/Complex systems theory), [Broad-concept articles](https://wikipedia.org.ai/Broad-concept articles)