Feedback is dangerous for many reasons, but mostly because the signal/noise ratio is mediocre. The problem with noisy feedback is the instability of the closed

Feedback is dangerous for many reasons, but mostly because the signal/noise ratio is mediocre. The problem with noisy feedback is the instability of the closed-loop system, and it can quickly become erratic and ultimately counter-productive. Thus, we should only use feedback when the signal is clear and loud, mostly at the extremes, when performance is outstanding or catastrophic.