Sure. If you want to talk about things we all agree on that are actionable—and some of this is built on some of the laws we have in the States—we all agree where a concussion occurs. Your brain changes function. There are 40 symptoms you could have, but you need only one to assume a concussion. We know that the person should rest and be gradually returned to sports in their life. That's agreed upon, but not always done.
We agree upon the fact that we don't diagnose most concussions, and this is a critical point where we have an opportunity. Athletes are still hiding most concussions, if they're old enough to understand that they have a concussion. If they're young, they don't understand that they have a concussion and they're not going to tell you. You'd have to be a doctor to recognize a concussion in a seven-year-old by examining their behaviour, because a seven-year-old's behaviour is all over the place.
We know that concussions are an important enemy, but there's something called a subconcussive impact. Imagine that it took a 100G hit in the head for me to have double vision for 10 minutes, and I also got hit in the head a bunch of times at 99Gs. Even though I didn't feel anything because it was below the threshold of causing double vision, it was still potentially damaging my brain microscopically, and those add up over time.
Therefore, it's very clear that it's not just a concussion issue, but the more hits to the head and the harder they are, the worse off you are, even if you don't have symptoms.