brittle: adj. Said of software that is functional but easily
broken by changes in operating environment or configuration, or by
any minor tweak to the software itself. Also, any system that
responds inappropriately and disastrously to abnormal but expected
external stimuli; e.g., a file system that is usually totally
scrambled by a power failure is said to be brittle. This term is
often used to describe the results of a research effort that were
never intended to be robust, but it can be applied to commercial
software, which (due to closed-source development) displays the
quality far more often than it ought to. Oppose robust.
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