The op is on the 2011 version, 2012 amended. Get the facts, folks.
The new version doesn't shift costs to old folks?
Why don't you read it? A start:
Robert J. Samuelson: Ryan's Medicare plan might work, a study says | Deseret News
Robert J. Samuelson: Ryan's Medicare plan might work, a study says
Overlooked in the furor surrounding Paul Ryan's Medicare proposal a plan, it should be recalled, that wouldn't start until 2023 and even then would affect only new beneficiaries is a just-published study in The Journal of the American Medical Association (JAMA) suggesting that, well, Ryan might be right. The study finds that a voucher-type system might noticeably reduce costs compared to "traditional" fee-for-service Medicare. Three Harvard economists did the study, including one prominent supporter of President Obama's health care overhaul.
The study compared the costs of traditional Medicare with Medicare Advantage, a voucher-like program that now enrolls about 25 percent of beneficiaries. Medicare Advantage has cost less for identical coverage. From 2006 to 2009, the gap averaged 11 percent between traditional Medicare and voucher plans that, under the proposal by Ryan and Sen. Ron Wyden, D-Ore., would serve as a price "benchmark."...
You can really stop reading after he claims in the first sentence that it will "affect only new beneficiaries", because you already know you're entering into a BS zone.