LIKE A ROCKNo longer open to debate: Perry is sinking fasthttp://fivethirtyeight.blogs.nytimes.com/2011/10/12/a-slow-but-unsteady-debate-for-perryA Slow but Unsteady Debate for Perryhttp://www.washingtonpost.com/politics/romney-prospers-in-republican-debate/2011/10/11/gIQALtqAeL_story.htmlAll eyes were on Texas Gov. Rick Perry and businessman Herman Cain in Tuesday’s Republican debate, and both