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perfect programmer syndrome: n.

Arrogance; the egotistical conviction that one is above normal human error. Most frequently found among programmers of some native ability but relatively little experience (especially new graduates; their perceptions may be distorted by a history of excellent performance at solving toy problems). “Of course my program is correct, there is no need to test it.” “Yes, I can see there may be a problem here, but I'll never type rm -r / while in root mode.