No, it cannot be saved. Seriously, study up on ponzi schemes. Eventually, some generation is going to the centerpiece in the SS bukake party. The best you can hope for is that it won't collapse in your lifetime. Also, I notice you didn't argue that changing the agreement by raising the age was a chickenshit bitch move.
BTW, people working longer would not be a problem for the social ponzi scheme. I think you're getting your talking points confused.
Exponential was probably not the correct word for me to use, but it requires increasing growth rates. In other words, if there were 10 people in the first generation, and 20 people in the second generation, only having 25 in the third generation will cause it to go bust. that's what we're seeing now with the baby boomers retiring. That's why people have been sounding the warning bells about SS for well over a decade. They saw the writing on the wall. While we have more taxpayers than we did 10 or 20 years ago, the growth rate has dipped.
Edit: What are you calling a voucher system in regards to SS? You keep saying that, and school vouchers are the only vouchers I'm aware of anyone trying to get done.