Hour 2: Economics and global finance undoubtedly play a huge role in our lives – and in the current political campaigns, but who really understands concepts like sub-prime, private equity, and bond ratings and just what does it all mean? We’ll find out this hour with Paddy Hirsch, Senior Producer for Marketplace, creator of the Marketplace Whiteboard, and author of “Man vs. Markets: Economics Explained (Plain and Simple)” (HarperBusiness, 2012). Hirsch is in town for tonight’s Marketplace event which will air live on KERA 90.1 from 7-8pm.