A conversation with Nokia's Stephen Elop, as we had earlier this week, is quite an experience. He's kind, friendly, charming and obviously extremely passionate about everything Nokia -- but his PR deflector shields are always full-forward. Ask him a challenging question and you'll be greeted with a very gentle response that sounds like an answer but is actually just a deftly delivered retooling of some standard PR-friendly message you've probably already heard. Interviewing Nokia SVP Kevin Shields is, as we've