So, when I crank the sound system in the church, or put a mic in front of a monitor I get feedback. It's a sound loop that amplifies itself until you shut it off or break something.

When I teach a college course I conclude with a "Feedback Survey" and get feedback on the highs and lows of the course.

When I tune a carburetor the rpms, smell, and throttle response give me feedback allowing me to find that sweet spot where she runs smooth, efficient, and responsive.

When I hone I use tests like shave tests, magnification, "hair popping" etc. to get feedback on where the edge is on its journey toward shave-vana.

When I read honing threads or articles, or watch Lynn, Glen, or Sham hone I find this word "Feedback" popping up time and time again, but I've yet to find a clear answer on what is meant by this term. At one point it seems to be a feel, or a suction, at another point it seems to be a sound, then again at other points the term seems to be referring to the composite of information gleaned from various tests.

Right now I'm in the midst of a "no shave" experiment, but as I near the end of this experiment I'm honing up my razors and getting ready for all the glories of my daily straight routines. Refreshing myself after some time off I'm coming up against this term again.

Anybody have a clear definition on this term?

Thanks,
Jim