For patients with lesions of the brain, attempting to correct their errors may upset and anger the patients, since the language center of their brain may not be able to process that what they are saying is incorrect and wordy.
Well damn, that does fit what we are seeing pretty well.
A large equipment mechanic I know only wears scrubs.
I might have asked him, "What's the diagnosis Dr." once or twice as after he looked at a tractor/combine etc...