The original poster stated that he's got a digital display in the aircraft, and reasoned that there's no question a value has been exceeded because the specific airspeed to the knot is displayed. The problem is that he's in a little, cheap, light airplane that doesn't feature an air data computer and doesn't account for installation error on that specific aircraft, and the truth is that the speeds just aren't that precise.

It's nothing to do with treating anything as cavalier, nor did I suggest or insinuate any such thing.

The student or applicant who dips below glideslope, and upon recognition announces and states "correcting" shouldn't be cut down where he stands, if he's operating safely. There's a bigger picture to see.

It may be the difference in experience and the hall-monitor ready to jump down the throat of an applicant for one knot difference, one degree, one foot, even one dot. I'd much rather see, per current guidance, that the student recognizes the error and corrects it, and if they do, move on.