Feedback is an output which becomes an input within a specific process.
Notes:
Positive feedback increases the speed of a specific process, potentially at an explosive rate. Negative feedback decreases the speed of a specific process.
Feedback directly or indirectly result from inputs. (For example, positive feedback loops can result from outputs which go through several filters before becoming inputs again, if the output still has a clearly perceptible influence on the filtered feedback.)
See Also: system