Difference between revisions of "Feedback"
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| − | '''Feedback''' is a phenomenon which occurs when outputs of a system are routed back as inputs | + | '''Feedback''' is a phenomenon which occurs when outputs of a system are routed back as inputs. |
| − | The system can then be said to feed back into itself. | + | This process of outputs becoming inputs forms a [[Signal chain|signal chain]] of cause-and-effect. |
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| + | The system can then be said to feed back into itself, forming a closed circuit or loop. | ||
The notion of cause-and-effect has to be handled carefully when applied to feedback systems: | The notion of cause-and-effect has to be handled carefully when applied to feedback systems: | ||
Revision as of 07:30, 12 August 2015
Feedback is a phenomenon which occurs when outputs of a system are routed back as inputs.
This process of outputs becoming inputs forms a signal chain of cause-and-effect.
The system can then be said to feed back into itself, forming a closed circuit or loop.
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. This makes reasoning based upon cause and effect tricky, and it is necessary to analyze the system as a whole."
See also
External links
- Feedback @ Wikipedia
