Texas Gov. Rick Perry said life experience means more than book smarts in a president, telling NBC News he's not the same candidate who ran in 2012 GOP primaries and that he can win in 2016. "Running for the presidency's not an IQ test. It is a test of an individual's resolve. It's a test of an individual's philosophy. It's a test of an individual's life's experiences," Perry said. He added that he probably has less "margin for error" after he couldn't remember one of the federal agencies he said he'd ax during a debate in 2011. But "I think, over the course of the last two years, people realize that what they saw in 2011 is certainly not the person they're looking at at 2013, 2014, 2015," he said.