What some of you might need to appreciate is that HC is far more than just a pretty face flying various aircraft. He has academic qualifications far beyond what is required to be a mere glorified bus driver.
But more to the point, his many talents and capabilities include much hands-on and in-depth experience with mechanical, electrical and electronic equipment.
There is very little that people formally qualified in those areas could surprise him with and had he chosen a career in any of those disciplines, he would have excelled.
So if he says "however 2 thou depth of pitting on a mirror finish is easy to see" then I suggest that you ought to believe it.
I await the predictable storm of snide comments from the usual suspects.