Jones on change in philosophy: Mistakes, I've made a few 01/03/2003 By CHIP BROWN / The Dallas Morning News IRVING - As aggressive and bold as Jerry Jones is, he hired Bill Parcells out of fear. A sometimes contrite Jones, who Monday spoke of a "change in philosophy," chose his words carefully Thursday after introducing Parcells. And some words definitely spoke louder than others. "I've made a lot of mistakes," the owner said. "You know I have. I am not going to grow careless with this relationship. I'm going to do everything within my power and my effort and...