COMMENT: How much brain damage am I prepared to tolerate?

Head injury in sport is not some social media fad -- look at the evidence

Yesterday was World Head Injury Awareness Day.

Did it make much of an impression on you? If you're a sports fan, probably not. But, here's the real question you should have been asking yourself yesterday:

Just how much recreational brain damage am I comfortable with? Just how much brain damage will I stomach for my own entertainment?

Fans of rugby, American football, boxing, or mixed martial arts, may be sick of hearing about ...