Perhaps the most telling finding in the latest survey of America's post-Great Recession mood is this: Seven in 10 believe the U.S. economy has changed permanently - for the worse. That comes from the John J. Heldrich Center for Workforce Development at Rutgers University in a survey published Thursday, titled "Unhappy, worried and pessimistic." Indeed, it makes for depressing - but not really surprising - reading. Five years into the economic "recovery" (the survey of 1,153 Americans was conducted between July 24 and Aug.