Quote from GTS:
Without fraud you cannot call SS a Ponzi scheme; its just another half-baked, poorly conceived gov't program.
Sure I can, I just did.
It is the STRUCTURE of the system, that determines its Ponzi-ness.
Another example is Amway. They have actually been sued several times for being a Ponzi, and they are because of their structure.. The only difference is that there is actual product involved, thus the court ruled in their favour. Nevertheless it is a pyramid system based on its base's continuous growth.
Another Ponzi scheme can be "churches" that need constant influx of new converts (with their money) to keep them afloat. Just because they have a product (belief, solvation, whatever) that doesn't mean they are not a Ponzi....
But let's go back to SS, several books already exposed its built in problems:
http://www.americanthinker.com/2005/03/the_social_security_ponzi_sche.html
"Much as in the original Ponzi scheme, Social Security also paid huge returns to its first investors who, whether intentionally or not, led Americans to believe the plan worked marvelously, thereby engendering the support of an exceedingly grateful nation.
For instance, the first American to ever receive a check from this new national savings plan was Ernest Ackerman, a streetcar motorman from Cleveland, Ohio who retired exactly one day after the program went into effect. For the five cents that was deducted from Mr. Ackerman's check the sole day he was a 'participant', he received a lumpâsum payment of 17 cents. This was a 240% return, which annualizes out to 87,600%. Nice investing, Ernie."
Remember, in a Ponzi, early birds get all the goods:
" according to Social Security Online, after cost of living increases and 35 years of receipts until her death in 1975, totaled a startling $22,888.92 in payments from a system to which Mrs. Fuller contributed $24.75."
More explanations and examples:
http://www.isil.org/resources/lit/time-to-end-ss.html