Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so.
When life knocks you to your knees, and it will, why, get up! If it knocks you to your knees again, as it will, well, isn't that the best position from which to pray?
We, as a league, must do a better job of protecting the integrity of the game and the safety of our players.