On the claim that all approaches to curbing Medicare spending are unproven

http://yglesias.thinkprogress.org/2011/05/only-one-of-the-major-approaches-to-controlling-health-care-costs-is-unproven / Matthew Yglesias: "[T]he world has a lot of examples of health care systems that are more "statist" than Americans... the "statist" approach does in fact succeed in pushing costs down lower than what we experience in the United States.... [R]elatively "non-statist" approaches like the one they use in Switzerland lead to higher than normal costs for Europe... the "super-statist" approach of the United Kingdom leads to extremely low costs. Last, right inside the United States of America we conveniently have a single-payer health insurance system for senior citizens, and a more market-oriented one for non-seniors. And guess what? Medicare is cheaper. The administrative overhead is lower, and the unit cost of services rendered is also lower. The argument against a statist approach that needs to be taken at least somewhat seriously is the idea that statist approaches make health spending too low..."