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Glossary » usability death spiral

usability death spiral

the condition where the longer a programmer or designer spends dealing with a particular piece of code (without observing real users using it), the more logical and usable it appears to be.

This is a metaphor to the aviation “Death Spiral” where the longer a pilot spends in a turn (in conditions where they cannot judge the horizon), the more likely they are to forget they are in a turn, fail to apply enough power to the turn and descend until they crash.