I spent over 11 years teaching computing at a major TAFE college. Nearly every day a PC would breakdown in class and I'd have to move a student to a spare PC, then call our techie to come down and fix it. We had 'codes' for specific problems - most of our common problems were 'pebkac's - problem exists between keyboard and chair !!!
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Wondering about ShortNorth ? - Short North is the railwayman's nickname for the NSWGR main line between Sydney and Newcastle