Good sentences

From Matt Yglesias:

…it’s simply not the case that contracting out lets you do away with the unelected panel of experts that Obama needs to make his price controls work. The premium support model of Medicare has at its heart a panel of experts determining the value of each person’s voucher since absent demographic and health status adjustment the whole system will be ruined by adverse selection.

Here are some related points from Ezra Klein, including a discussion of Paul Ryan.