Dick...professionals earn their living by embedding "Chronic Unease" into their daily lives. Not as a one stop shop for safety because training, SOPs, discipline, readiness, rehearsing of "what-ifs", listening, continuous learning, experience, culture, prudence etc etc etc are all foundation stones too.
First flight at Royal Vic 1966, Victa 100.....I remember the instructors words so well. "Always check the fuel in the tanks by looking, even if your own mother swears she's checked it for you". It all builds from there. And there's much more than just that in professional airmanship.
Reminding professionals of the blindingly obvious troubles me Dick because it makes me wonder just how much deeper than skin deep is your own knowledge of how real safety works.