Maybe the system just accepts you'll miss the target 2% of the time for reasons like that. However, the workers don't see that and get stressed (by design). Als

Maybe the system just accepts you'll miss the target 2% of the time for reasons like that. However, the workers don't see that and get stressed (by design). Also, if the actual frequency of these issues is 1.9%, some workers will have bad luck and get penalised (also accepted as part of the design).