Much of the criticism being leveled at social security revolves around the idea that - when compared to a pension system - social security performs poorly.
Duh! Everything performs poorly when compared to an inappropriate metric. A social security system is based around transfer payments, and should be compared to other transfer payments schemes like unemployment insurance - not against pension systems based on investment.
I think it's a very enlightening post. As an aside, David Tufte wonders if he might be a Libertarian. My message to him is to come to the light. You can begin by taking the Social Security post to the next step and pointing out that government shouldn't be allowed to steal from some to give to others with more voting power.
I have previously written in my blog that I am opposed to "privatizing" Social Security.