Dog, hats off chum - unfortunately it is the difference between having the qualification / credentials and being able to apply them in the appropriate situation and someone who has done the course so therefore they must rigorously apply the framework / theory / approach to everything.
Bosh - I went for many years thinking everyone had common sense as a natural commodity - I have since learnt they dont - I have met individuals who you couldn't trust with a sharp pencil, very nice salt of the earth do anything for you types but a crayon was safer for them and super intelligent think tank boffins that you couldnt wave at across a road as they would walk straight out into the road towards you still waving oblivious to the bus heading for them.
PS
isnt WD40 - water displacement experiment / trial number 40 and is made from duck oil? smells almost as nice as gun oil (yummy)... but not quite.....