There's a lot of jargon in the average bank earnings call — net interest margin, capital markets, credit quality. But if you cut through the noise and know what to listen for, you can learn a lot about the state of the economy. Next week, many of the nation's biggest banks will report results for the three months that ended September 30. America's biggest bank, JPMorgan Chase , kicks things off Tuesday, alongside Wells Fargo and Citi, followed by Bank of America on Wednesday. Thanks to the