Miles....You are absolutely correct on the need of having command on the language & the use of technical terms while clearing a PDR.
This field does need the clarity of explaining the work done with references to the manuals utilized.
My point is towards those that don't assist in guiding a youngster but rather cut short his question that the poor bloke looses confidence in asking the next one.
You & I have years in Aviation Maintenance & experience has given us a level of confidence that the fresher would lack,hence the clarity of language is lacking in some posts.
regds
MEL