We also know that even if we went cold turkey and stopped shut down OASI today and paid only those who were "vested" so to speak we would need close to $10 Trillion.
So what do we do? Well after reducing the problem down I propose the plan listed below. It has been analyzed using a fairly sophisticated OASI model which so far for over 20 years has been correct (much more so than Social Security's) The date of bankruptcy has only move 2 years in all this time. The date of cash negative has moved about one year (2016-2017).
Modeling OASI is fairly easy if you just run the numbers.