Why social security is NOT a Ponzi scheme
From Wikipedia:
A Ponzi scheme is a fraudulent investment operation that pays returns to separate investors, not from any actual profit earned by the organization, but from their own money or money paid by subsequent investors. The Ponzi scheme usually entices new investors by offering returns other investments cannot guarantee, in the form of short-term returns that are either abnormally high or unusually consistent. The perpetuation of the returns that a Ponzi scheme advertises and pays requires an ever-increasing flow of money from investors to keep the scheme going.
The system is destined to collapse because the earnings, if any, are less than the payments to investors. Usually, the scheme is interrupted by legal authorities before it collapses because a Ponzi scheme is suspected or because the promoter is selling unregistered securities. As more investors become involved, the likelihood of the scheme coming to the attention of authorities increases.
The difference between old age pension and health care obligations and a Ponzi scheme is GLARINGLY clear. One is legal and the other is not.
Hope this helps.