These are hard rules. Unbreakable and unflappable.
Don't draft crazy. If a player was acting crazy in college, that will not improve once he is given the economic ability to literally do anything he wants.
If a player was injured repeatedly in college he will not stop being injured repeatedly when colliding with bigger, stronger men.
Never be afraid to draft a guy named George. There's a bunch of them in the Hall of Fame.
The greatest defensive player in the history of the sport spent thousands of dollars a day - throughout his career - on cocaine. So don't worry too much about failed drug tests for marijuana use.
Even if you have a terrific starter, drafting a quarterback is never a poor decision. It is the only position wherein a solid performance in meaningless preseason games can provide your franchise with a bounty of draft picks in the future.