A reassuring number and weak evidence

A fictional organization reports no injuries during a short period and presents the number as proof that its safety program is effective. During the same period, workers report that a damaged barrier was not repaired, several drills were postponed and supervisors discouraged reporting small incidents. Exposure hours and reporting definitions have not been compared with the earlier period. The organization has resources to review controls and complete corrective actions, but no conclusion about every task or individual is supplied. The exercise asks whether one outcome count can establish the condition of the system and what evidence would make a practical improvement decision more defensible.