And Medicare dominates Social Security, so what we're really talking about here is the unchecked growth in medical expenditures. Which is, in turn, subject to change by public policy.
Right. Out of that $123 trillion figure, $80 trillion is medicare. Not only is it subject to changes in policy, it's also much more susceptible to manipulation (upward and downward) to make the problem seem bigger or smaller than it really is, because of the uncertainty of medical expense growth going forward.
