The latest hazard is wrongly used as the escape deadline

A fictional building model reports that visibility becomes unacceptable at six minutes, temperature at nine and toxic exposure at ten under the stated criteria. Required modeled escape time is seven minutes before any additional margin. A manager selects ten minutes as the available period because that is the last criterion to fail. The installed corridor also has unverified cable penetrations through a rated wall and a temporarily obstructed alternative exit. This written case authorizes no occupancy or evacuation through smoke. Explain why the modeled comparison is unfavorable and why the actual assembly, route condition, occupant needs and uncertainty must be checked instead of relying on a favorable-looking single number.