How can you learn if you erase your hard drive? #nyj Dan Leberfeld

Rex Ryan said recently, “I believe Mark (Sanchez) needs to erase his hard drive.”

Rex feels Sanchez needs to forget about his bad 2012 season.

I know where Rex is coming from, but how do you learn all the mistakes from 2012 without reviewing the film with your new coaches? In the case of Sanchez, that would be offensive coordinator Marty Mornhinweg and quarterback coach David Lee.

Fixing what is holding Sanchez back isn’t as simple as erasing his hard drive.

And the new coaches need to figure out if his shortcomings (reading defenses, accuracy, telegraphing passes, pocket presence) are fixable.

Sometimes, with quarterbacks, some deficiencies can’t be fixed.