Evaluating a draft class is difficult enough for those charged with predicting the future in the uncertain business of human nature. But this year's quarterback class might be the source of some of the highest-profile mistakes. There is plenty of disagreement about who are the most NFL-worthy passers. For a league that is only a few months removed from Andrew Luck, Robert Griffin III and Russell Wilson leading their teams to the playoffs in their rookie years, this year's class figures to wither in constant comparison. Among the challenges are deciding the value of the read option, what it will be in the league, and how big a part of the quarterback evaluation it should be. If it's a long-term piece of the offensive puzzle, then there is value in a quarterback who can run it. If it's a fad, an offensive anomaly, then it doesn't need to be on the requirements list. The general feeling is the read option is a nice thing to have in the playbook, an effective once-in-a-while thing, but no way to make a living. The risk of a potential $100 million player making the reads and choosing the option, doesn't make good fiscal sense.The sight of Griffin's leg collapsing underneath him in January had a chilling effect. A franchise player taking on defenders out in the open is going to be a tough call in the business of pro football. Griffin's original knee injury came well down the field when he was tackled by Baltimore Ravens defensive tackle Haloti Ngata.