Most of us look at NFL rules as a list of prohibitions. Teams see them differently. For them, the rulebook is a runway toward competitive advantage, and they focus more on what it allows.
In 2021, that means figuring out how to best exploit a rule change that imposes new limits on low blocks. It means compiling dossiers on the league office employees who will make replay decisions following the retirement of senior vice president Al Riveron. And it means getting an understanding of how officials will use in-stadium replay officials in real time for help in making certain calls, per a new rule.