ESPN.com Insider KC Joyner, "The Football Scientist," explores and explodes many of the myths of NFL football Have free agency and salary caps put an end to football dynasties? Does it take an elite running back to win a Super Bowl? Which players belong in the Hall of Fame? What defense is the greatest of all time? Does playing creampuffs work for NFL teams? Do coaches have a ten-year shelf life? In Blindsided, pro...