All four living (current and past) Federal Reserve chairs discussed investors’ perception of the economy last week and agreed that the U.S. economy is sound. Despite the overall postiive economic picture, though, the commodities snapshot isn’t as bullish.Last Thursday at the kickoff of a speaker series named in honor of former Federal Reserve Chairman Paul Volker, all four living (current and past) Federal Reserve chairs sat for one single interview, which was an unprecedented occurrence. Along with Volker were current Chairperson Janet Yellen as well as Ben Bernanke with Alan Greenspan joining on live video feed. They discussed investors’ perception of the economy and were all in agreement that the U.S. economy is sound and not experiencin...