And it bolsters other unions' claims: "Never before has so much media attention been paid to a labor dispute involving so few actual laborers the 120 NFL referees," says Karl Taro Greenfeld at Bloomberg Businessweek. But the controversy also "reflects a larger trend in the American workplace." In addition to a dispute over pensions, the referees' union is rejecting a strict performance metric that is similar to a recent proposal to evaluate Chicago teachers on student test scores. Both the refs and teachers say such rigid proposals fail to take their work environment into account, and the replacement refs controversy may show that "officiating, like teaching, is as much art as science.".Back then, the Colts rolled the dice on receiver Donnie Avery, cornerback Darius Butler and cornerback Vontae Davis. Each was a first or secondround pick who failed to pan out in previous stops, and each started at least five games last season. All became major contribu