Willett Advisors Chairman Steve Rattner says there's a lot of fear in the investment community. Deutsche Bank's Torsten Slok asks: where is the credit crunch? Germany's central bank chief Jens Weidmann questions the effectiveness of negative rates. And Bank of Tokyo-Mitsubishi UFJ's Lee Hardman focuses on FX. All this and more on Bloomberg Surveillance with Tom Keene and Michael McKee.