Rare

/rɛər/

adjective — "the kind of bug you spend hours hunting before realizing it’s a feature."

Rare in information technology refers to events, errors, or conditions that occur infrequently but can have outsized impact. These can appear in software execution paths, unusual input combinations, or exceptional data patterns in large datasets. Rare occurrences often challenge debugging, testing, or monitoring processes because they are outside the “normal” flow and may reveal hidden vulnerabilities or unexpected behavior.

Technically, rare may involve:

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