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I think a great comparison would be between the British tv show "Scrapheap Challenge", and "real world" engineering.

In the show, teams have to compete, over a period of 3 days, to build specific vehicles (e.g. amphibious cars, remote control tanks, light aircraft) out of what they can find in a (well stocked) scrapheap. The vehicles are invariably unsafe, hastily put together, and look you think they'd look after being made out of scrap. Generally however, each vehicle actually performs the task its made for.

If you took any one of the competitors on scrapheap challenge, and dropped them into (say) Lockheed-Martin, they'd undoubtably flounder (at least initially). The skills required to hack together an aeroplane in 3 days, are entirely different from the set of skills required to design an f22.