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
problem s). 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.