[snowfarthing]

I recall a psychologist or psychiatrist who challenged the notion of "defiant personality disorder" by observing two things:

(1) Many of these "defiant" people merely didn't trust credentials -- they were perfectly fine with authority who earned deference by virtue of proving they really do know what they are doing, and

(2) That the psychology/psychiatry profession in general, consisting of people who have their Masters and PhDs, have to "suck up" to a lot of credentialed authority, without question, to get their degrees -- and thus it's only natural for them to expect everyone to unconditionally respect credentials!

(For the record, I have a PhD, but it's in pure math, which is possibly simultaniously both the least practical and most practical thing you could possibly learn -- but as such, I'm tangential to engineering and physics -- and I'm pretty sure that all three of these fields have a certain "fine, you have a credential, but can you really walk the walk?" element to them.)