Former Wall Street practitioners say the Street does not lend itself to a lot of introspection. „The world of investment bankers and especially the trading floor region is notoriously hermetically sealed,'“ says Kenneth Froewiss, a retired JPMorgan Chase investment banker and former finance professor at New York University‘s Stern School of Business. „The walls may be filled with screens beaming the latest news, but there is typically an obliviousness as to what is happening across the street.“