http://finance.yahoo.com/blogs/dail...-ron-johnson-done-incalculable-160736591.html "He's caused incalculable damage," Davidowitz says of Johnson, who joined J.C. Penney last year after running Apple's (AAPL) retail operations. "The customers are everything. They don't know what the hell he's doing." "J.C. Penney didn't need a revolution, it needed an evolution," he says. "You can't take an old line company that's been operating the same way a very long time and throw everything out the window and say 'now we've reinvented the company.'"