When it's come to the "rubber hitting the road" it's nearly always the people who came loaded with these qualifications who turned out to be the hires that were about as much use as a chocolate teapot. It's been so consistent that I started to treat industry qualifications on a CV as a warning flag. That doesn't mean that I wouldn't interview people qualified thusly if the rest of their CV looked good, but it did mean that I started quizzing people on almost insultingly basic scenarios that anyone competent ought to be able to answer without blinking - the equivalent for whatever I was interviewing them for to pointing an EE at a schematic and saying "tell me how this two transistor amplifier works". There was a horrible consistency that many the folks who came with a lot of "Frobnitz certified expert" qualifications regularly failed to be able to prove that they had an understanding of the [topic/task specific] basics.
Hi Cerebus. Just few bits from my past...
When ever I was interviewing people, (including apprentice reviews etc), I always acted friendly, and tried to put them at ease,
because I know it was a stressful time for them, and so feedback may not reflect their true abilities/capabilities/knowledge. And
when talking to apprentices & new trades-people, I would always do so in an informative & helpful manner, to improve their knowledge
and understanding. All too often, I've found trades-people just using apprentices for very mundane tasks, for which I would berate
them! Often they had voiced concerns that if the new ones learn too much, they may loose there job!!! I, on the other hand, had
always taught everyone everything that I knew!!

Re: Specific questions/answers about knowledge in an interview...
I once was in an interview myself with a major Govt dept, and two of them grilled me for ages, about some specific types of control
systems, unsuccessfully getting the right responses from me. (They were using 'foreign' in-house terms, that were NOT used in the
'outside-world' in the industry...) They were about to dismiss me from the interview when a light came on in my head! I said...
"Oh, you are talking about 'Proportional/Integral/Derivative' action!!", so I went on to explain it in detail, verbally & diagrammatically!!

They realized I knew all they wanted, and more, but THEY used different wording. Later that day, I refused their offer as by then I
had accepted an offer from Honeywell Security. Was interesting though...

Last point...
I've found on many occasions that 'some' so-called engineers have certain technical qualifications just out of school/uni etc, but have
NO people-skills or real-world experience in the field. I always much preferred & had respect for those who had come up through the
proverbial ranks as well. With such hands-on experience, they truly understand how to address people, talk about problems in a
constructive manner, and appreciate how much 'work' is often required to complete certain tasks!

Anyway, have a Merry Christmas & Happy New Year!! Glenn.
