Indeed, that seems likely. But there are political and social realities to consider. If what is optimal is something along the lines of: "In case of fire, if there is a fire escape then use that, otherwise shelter in place" then a conditional that must be evaluated ends up embedded in the emergency plan. This is a much bigger problem than is immediately obvious. If everyone knows that in case of a fire one should exit through the fire escape stairs then this leads not only simplification of emergency procedures but also their enforcement. In America seeing a fire escaped blocked or chained up is cause for immediate alarm and enforcement with the general public being perfectly capable of basic inspection themselves. Having an extremely simple plan for fire safety can help increase reliability because everyone knows and understands the plan, can contribute to enforcement, and execute the plan when there is an emergency. Engineering optimization not only does generate conflicts with social and political realities but in fact almost inevitably does so.