Developer learns repeated quick fixes mask deeper gaps in how we test our own work

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A software developer writing on DEV Community reflected on fixing the same category of mistake five times in a single month before recognising a flawed approach to error prevention. Rather than addressing root causes, they had been patching individual instances, gaining brief relief from a passing check without making lasting progress. The developer observed that automated checks only capture failures already imagined by the person who wrote them, leaving unimagined edge cases entirely unguarded. Reviewing their actual past failures, they identified at least five distinct ways a safeguard can fail: blocking valid work, missing bad work, crashing on unexpected input, silently destroying data, or approving incomplete output. The experience prompted a change in working habits, with the key insight being that a green check confirms survival of known cases, not overall correctness.

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