<jargon, abuse> At computer installations where the computers have operators for routine administrivia, the programmers and hardware people tend to look down on the operators and claim that a trained monkey could do their job. The incentives offered to said monkeys would then describe the difficulty of a task. A one-banana problem is simple; hence, "It's only a one-banana job at the most; what's taking them so long?"
See also Infinite-Monkey Theorem.
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Nearby terms: ONC « Ondine « one « one-banana problem » one-line fix » one-liner wars » ones complement