4. Imagine an undefeated high school football team on which the average lineman weighs 300 pounds. Also, imagine an 0-10 team on which the average lineman weighs 170 pounds. The undefeated team sets out to hit as hard as they can on every play and to run up the score as much as possible. Before the 5. game is over, 11 players from the lesser team have been carried off the field with significant injuries. All injuries were the result of "clean hits"-none of the plays resulted in a penalty. Even late in the game, when the score is 70-0, the undefeated team continues to deliver devastating hits that are far