Amplitude

Amplitude is a bit more than it might seem. Amplitude in loudness turns a folksingers ballad into a booming, unappealing wave of noise. But, on the other hand, too little amplitude in sincerity leaves an emotional appeal devoid of conviction.
Getting it right, measuring the correct volume, sincerity of appeal, or conviction is much of what life is about. We talk of people over or underplaying their hands, things being too coarse or delicate, too bright or subdued.
In short, amplitude is critical to turning debacles into successes or vice versa. Yet, as important as this seems, we spend little time teaching how subtlety and control effect success, and so many go through life persistently loud or overly quiet.