Feedback

See also: Communication | Chaos

Feedback is communication which is conveyed back into the system from which it resulted from. Feedback can be something which is desired as a good thing and at other times a bad thing with causes interference.

In democracies elections are used to poll feedback from voters. Other examples include;

Opinion and comments posted in reponse to a weblog entry, wiki entry, etc
Noise can cause feedback in audio systems.
a peacock’s beautiful fantail, a product of past aesthetics whims
iterations in fractal formula

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