[Charcot]

I agree that that is the reason players say they want fighting in the game. Smith's arguments and the data from the Canadian universities support the player's belief. Better data with closer comparables would be better. A study comparing two leagues with similar levels of players who are evaluated the same way for concussion would help. Perhaps the AHL vs the Sweedish elite league. The different size of the ice surface and style of play there would confound things though.