Any parent that encourages a child to play football is now warned of the potential consequences.  Any child upon reaching the age of 18 should be looking at, and signing off on, a complete disclosure of the potential impact of playing football, including vivid descriptions of the experiences of those who have suffered.
Any sport that does not immediately evolve to diminish concussion possibilities is flirting with death of their own sport, as well as some of its participants.
This study should be this week's TSN Turning Point.