If economic growth averages 2% for the next 35 years America will be twice as rich as it is now. We can provide for old folks now, just like we did 35 years ago, and we can definitely do it 35 years from now. This is just another rich dude complaining about the proles.
No account for inflation? No account for the rising costs in healthcare, and diminishing returns on that "investment"? No account for the fact that 35 years ago the proportion of economic active people to retired ones was completely different? If you are going to dismiss a (very middle class, by social standards) dude, at least you should do a little bit more than hand-waving.
Here's the simple way to think about pensions/SS: we take about 4% of GDP and cut checks to old people. They buy food and pay their rent. Nobody starves. It always works, in 1961, 2011, 2061, whenever. Anybody who says otherwise is trying to fool you.